Webster's Unabridged Dictionary - Letter L - Page 4
Lactic (a.) (Physiol. Chem.) Of or pertaining to milk; procured from sour milk or whey; as, lactic acid; lactic fermentation, etc.
Lactic acid (Physiol. Chem.), A sirupy, colorless fluid, soluble in water, with an intensely sour taste and strong acid reaction. There is one center of optical activity, and this results in the observation of three isomeric modifications all having the formula C3H6O3; one is dextrorotatory (L-lactic acid), the other levorotatory (D-lactic acid), and the third an optically inactive mixture of the first two (DL-lactic acid); chemically it is 2-hydroxypropanoic acid. Sarcolactic acid or paralactic acid occurs chiefly in dead muscle tissue, while ordinary lactic acid (DL-lactic acid) results from fermentation, such as the fermentation of milk by lactic acid bacteria. The two acids are alike in having the same constitution (expressed by the name ethylidene lactic acid), but the latter is optically inactive, while sarcolactic acid rotates the plane of polarization to the right. The third acid, ethylene lactic acid, accompanies sarcolactic acid in the juice of flesh, and is optically inactive.
Lactic ferment, An organized ferment ({Bacterium lacticum"> Lactic ferment, an organized ferment ({Bacterium lacticum or Bacterium lactis), which produces lactic fermentation, decomposing the sugar of milk into carbonic and lactic acids, the latter, of which renders the milk sour, and precipitates the casein, thus giving rise to the so-called spontaneous coagulation of milk.
Lactic fermentation. See under Fermentation.
Lactic (a.) Of or relating to or obtained from milk (especially sour milk or whey); "lactic acid"; "lactic fermentation."
Lactide (n.) (Chem.) A white, crystalline substance, obtained from lactic acid by distillation, and regarded as an anhydride; also, by extension, any similar substance.
Lactiferous (a.) Bearing or containing milk or a milky fluid; as, the lactiferous vessels, cells, or tissue of various vascular plants. Lactific
Lactific (a.) Alt. of Lactifical.
Lactifical (a.) Producing or yielding milk.
Lactifuge (n.) (Med.) A medicine to check the secretion of milk, or to dispel a supposed accumulation of milk in any part of the body.
Lactifuge (n.) Any agent that reduces milk secretion (as given to a woman who is not breast feeding).
Lactim (n.) (Chem.) One of a series of anhydrides resembling the lactams, but of an imido type; as, isatine is a lactim. Cf. Lactam.
Lactimide (n.) (Chem.) A white, crystalline substance obtained as an anhydride of alanine, and regarded as an imido derivative of lactic acid.
Lactin (n.) (Physiol. Chem.) See Lactose.
Lactose (n.) (Physiol. Chem.) The main sugar present in milk, called also sugar of milk or milk sugar. When isolated pure it is obtained crystalline; it is separable from the whey by evaporation and crystallization. It is a disaccharide with the formula C12H22O11, being chemically 4-([beta]-D-galactosido)-D-glucose. It has a slightly sweet taste, is dextrorotary, and is much less soluble in water than either cane sugar or glucose. Formerly called lactin. When hydrolyzed it yields glucose and galactose.
In cells it may be hydrolyzed by the enzyme [beta]-galactosidase.
Lactose (n.) (Chem.) See Galactose.
Lactoabumin (n.) (Physiol. Chem.) The albumin present on milk, apparently identical with ordinary serum albumin. It is distinct from the casein of milk.
Lactobutyrometer (n.) An instrument for determining the amount of butter fat contained in a given sample of milk.
Lactodensimeter (n.) A form of hydrometer, specially graduated, for finding the density of milk, and thus discovering whether it has been mixed with water or some of the cream has been removed.
Lactometer (n.) An instrument for estimating the purity or richness of milk, as a measuring glass, a specific gravity bulb, or other apparatus.
Lactone (n.) (Chem.) One of a series of organic compounds, regarded as anhydrides of certain hydroxy acids. In general, they are colorless liquids, having a weak aromatic odor. They are so called because the typical lactone is derived from lactic acid.
Lactonic (a.) (Chem.) Of, pertaining to, or derived from, lactone.
Lactonic (a.) (Chem.) Pertaining to, or designating, an acid obtained by the oxidation of milk sugar (lactose).
Lactoprotein (n.) (Physiol. Chem.) A peculiar albuminous body considered a normal constituent of milk.
Lactory (a.) Lactiferous. [Obs.] "Lactory or milky plants." -- Sir T. Browne.
Lactoscope (n.) An instrument for estimating the amount of cream contained in milk by ascertaining its relative opacity.
Compare: Galactose
Galactose (n.) (Chem.) A white, crystalline sugar, C6H12O6, isomeric with dextrose, obtained by the decomposition of milk sugar, and also from certain gums. When oxidized it forms mucic acid. Called also lactose (though it is not lactose proper).
Lactose (n.) (Physiol. Chem.) The main sugar present in milk, called also sugar of milk or milk sugar. When isolated pure it is obtained crystalline; it is separable from the whey by evaporation and crystallization. It is a disaccharide with the formula C12H22O11, being chemically 4-([beta]-D-galactosido)-D-glucose. It has a slightly sweet taste, is dextrorotary, and is much less soluble in water than either cane sugar or glucose. Formerly called lactin. When hydrolyzed it yields glucose and galactose. In cells it may be hydrolyzed by the enzyme [beta]-galactosidase.
Lactose (n.) (Chem.) See Galactose.
Lactuca (n.) A genus of composite herbs, several of which are cultivated foe salad; lettuce.
Lactucarium (n.) The inspissated juice of the common lettuce, sometimes used as a substitute for opium.
Lactucic (a.) Pertaining to, or derived from, the juice of the Lactuca virosa; -- said of certain acids.
Lactucin (n.) A white, crystalline substance, having a bitter taste and a neutral reaction, and forming one of the essential ingredients of lactucarium.
Lactucone (n.) A white, crystalline, tasteless substance, found in the milky sap of species of Lactuca, and constituting an essential ingredient of lactucarium.
Lacturamic (a.) Pertaining to, or designating, an organic amido acid, which is regarded as a derivative of lactic acid and urea.
Lactyl (n.) An organic residue or radical derived from lactic acid.
Lacunae (n. pl. ) of Lacuna.
Lacunas (n. pl. ) of Lacuna.
Lacuna (n.) A small opening; a small pit or depression; a small blank space; a gap or vacancy; a hiatus.
Lacuna (n.) A small opening; a small depression or cavity; a space, as a vacant space between the cells of plants, or one of the spaces left among the tissues of the lower animals, which serve in place of vessels for the circulation of the body fluids, or the cavity or sac, usually of very small size, in a mucous membrane.
Lacuna (n.) (pl. Lacunae or lacunas) A blank space; a missing part; a gap.
Lacuna (n.) (pl. Lacunae or lacunas) (Biology) A small opening, depression, or cavity in an anatomical structure. Lacuna is from the Latin lacuna, "a cavity, a hollow," from lacus, "a hollow."
Lacuna (n.) [ C ] (pl. Lacunae lacunas formal) （書或文章中）缺漏，脫漏，空白 An absent part, especially in a book or other piece of writing.
Lacunal (a.) Alt. of Lacunar.
Lacunar (a.) Pertaining to, or having, lacunae; as, a lacunar circulation.
Lacunars (n. pl. ) of Lacunar.
Lacunaria (n. pl. ) of Lacunar.
Lacunar (n.) The ceiling or under surface of any part, especially when it consists of compartments, sunk or hollowed without spaces or bands between the panels.
Lacunar (n.) One of the sunken panels in such a ceiling.
Lacune (n.) A lacuna.
Lacunose (a.) Alt. of Lacunous.
Lacunous (a.) Furrowed or pitted; having shallow cavities or lacunae; as, a lacunose leaf.
Lacustral (a.) Alt. of Lacustrine.
Lacustrine (a.) Found in, or pertaining to, lakes or ponds, or growing in them; as, lacustrine flowers.
Lacwork (n.) Ornamentation by means of lacquer painted or carved, or simply colored, sprinkled with gold or the like; -- said especially of Oriental work of this kind.
Lacy (a.) (Lacier, laciest) Of or resembling lace; lacelike: a lacy gown; a lacy leaf. (Lacily adv., Laciness n.)
Lacy (a.) 蕾絲的（用蕾絲製成的；點綴有蕾絲花邊的） Made of or decorated with lace. (= decorative cloth)
// Lacy underwear.
Lad () p. p. of Lead, to guide.
Lad (n.) A boy; a youth; a stripling.
Lad (n.) A companion; a comrade; a mate.
Ladanum (n.) A gum resin gathered from certain Oriental species of Cistus. It has a pungent odor and is chiefly used in making plasters, and for fumigation.
Ladde (obs. imp.) of Lead, to guide.
Ladder (v. i.) A frame usually portable, of wood, metal, or rope, for ascent and descent, consisting of two side pieces to which are fastened cross strips or rounds forming steps.
Ladder (v. i.) That which resembles a ladder in form or use; hence, that by means of which one attains to eminence.
Laddie (n.) A lad; a male sweetheart.
Laded (imp.) of Lade.
Laded (p. p.) of Lade.
Laded () of Lade.
Lading (p. pr. & vb. n.) of Lade.
Lade (v. t.) To load; to put a burden or freight on or in; -- generally followed by that which receives the load, as the direct object.
Lade (v. t.) To throw in out. with a ladle or dipper; to dip; as, to lade water out of a tub, or into a cistern.
Lade (v. t.) To transfer (the molten glass) from the pot to the forming table.
Lade (v. t.) To draw water.
Lade (v. t.) To admit water by leakage, as a ship, etc.
Lade (n.) The mouth of a river.
Lade (n.) A passage for water; a ditch or drain.
Lademan (n.) One who leads a pack horse; a miller's servant.
Laden (p. & a.) Loaded; freighted; burdened; as, a laden vessel; a laden heart.
Ladied (a.) Ladylike; not rough; gentle.
Ladies' eardrops () The small-flowered Fuchsia (F. coccinea), and other closely related species.
Ladify (v. t.) To make a lady of; to make ladylike.
Ladin (n.) A Romansch dialect spoken in some parts of Switzerland and the Tyrol.
Lading (n.) The act of loading.
Lading (n.) That which lades or constitutes a load or cargo; freight; burden; as, the lading of a ship.
Ladinos (n. pl. ) of Ladino.
Ladino (n.) One of the half-breed descendants of whites and Indians; a mestizo; -- so called throughout Central America. They are usually of a yellowish orange tinge.
Ladkin (n.) A little lad.
Ladle (v. t.) A cuplike spoon, often of large size, with a long handle, used in lading or dipping.
Ladle (v. t.) A vessel to carry liquid metal from the furnace to the mold.
Ladle (v. t.) The float of a mill wheel; -- called also ladle board.
Ladle (v. t.) An instrument for drawing the charge of a cannon.
Ladle (v. t.) A ring, with a handle or handles fitted to it, for carrying shot.
Ladled (imp. & p. p.) of Ladle.
Ladling (p. pr. & vb. n.) of Ladle.
Ladle (v. t.) To take up and convey in a ladle; to dip with, or as with, a ladle; as, to ladle out soup; to ladle oatmeal into a kettle.
Ladlefuls (n. pl. ) of Ladleful.
Ladleful (n.) A quantity sufficient to fill a ladle.
Ladrone (n.) A robber; a pirate; hence, loosely, a rogue or rascal.
Ladies (n. pl. ) of Lady.
Lady (n.) A woman who looks after the domestic affairs of a family; a mistress; the female head of a household.
Agar, the handmaiden of Sara, whence comest thou, and whither goest thou? The which answered, Fro the face of Sara my lady. -- Wyclif (Gen. xvi. 8.).
Lady (n.) A woman having proprietary rights or authority; mistress; -- a feminine correlative of lord. "Lord or lady of high degree." -- Lowell.
Of all these bounds, even from this line to this, . . . We make thee lady. -- Shak.
Lady (n.) A woman to whom the particular homage of a knight was paid; a woman to whom one is devoted or bound; a sweetheart.
The soldier here his wasted store supplies, And takes new valor from his lady's eyes. -- Waller.
Lady (n.) A woman of social distinction or position. In England, a title prefixed to the name of any woman whose husband is not of lower rank than a baron, or whose father was a nobleman not lower than an earl. The wife of a baronet or knight has the title of Lady by courtesy, but not by right.
Lady (n.) A woman of refined or gentle manners; a well-bred woman; -- the feminine correlative of gentleman.
Lady (n.) A wife; -- not now in approved usage. -- Goldsmith.
Lady (n.) Hence: Any woman; as, a lounge for ladies; a cleaning lady; also used in combination; as, saleslady.
Lady (n.) (Zool.) The triturating apparatus in the stomach of a lobster; -- so called from a fancied resemblance to a seated female figure. It consists of calcareous plates.
Ladies' man, A man who affects the society of ladies.
Lady altar, An altar in a lady chapel. -- Shipley.
Lady chapel, A chapel dedicated to the Virgin Mary.
Lady court, The court of a lady of the manor.
Lady crab (Zool.), A handsomely spotted swimming crab ({Platyonichus ocellatus) very common on the sandy shores of the Atlantic coast of the United States.
Lady fern. (Bot.) See Female fern, under Female, and Illust. of Fern.
Lady in waiting, A lady of the queen's household, appointed to wait upon or attend the queen.
Lady Mass, A Mass said in honor of the Virgin Mary. -- Shipley.
Lady of the manor, A lady having jurisdiction of a manor; also, the wife of a manor lord.
Lady's maid, A maidservant who dresses and waits upon a lady. -- Thackeray.
Our Lady, The Virgin Mary.
Lady (a.) Belonging or becoming to a lady; ladylike. "Some lady trifles." -- Shak.
Lady (n.) A polite name for any woman; "a nice lady at the library helped me."
Lady (n.) A woman of refinement; "a chauffeur opened the door of the limousine for the grand lady" [syn: dame, madam, ma'am, lady, gentlewoman].
Lady (n.) A woman of the peerage in Britain [syn: Lady, noblewoman, peeress] [ant: Lord, noble, nobleman].
LADY, () ["Key Concepts in the INCAS Multicomputer Project", J. Nehmer et al IEEE Trans Soft Eng SE-13(8):913-923 (Aug 1987)].
(1996-06-21)
Ladybird (n.) Any one of numerous species of small beetles of the genus Coccinella and allied genera (family Coccinellidae); -- called also ladybug, ladyclock, lady cow, lady fly, and lady beetle. Coccinella seplempunctata in one of the common European species. See Coccinella.
Ladybug (n.) Same as Ladybird.
Ladyclock (n.) See Ladyrird.
Lady () The day of the annunciation of the Virgin Mary, March 25. See Annunciation.
Ladyfish (n.) (Zool.) A large, handsome oceanic fish ({Albula vulpes), found both in the Atlantic and Pacific oceans; -- called also bonefish, grubber, French mullet, and macabe.
Ladyfish (n.) (Zool.) A labroid fish ({Harpe rufa) of Florida and the West Indies.
Ladyfish (n.) Game fish resembling the tarpon but smaller [syn: ladyfish, tenpounder, Elops saurus].