Webster's Unabridged Dictionary - Letter D - Page 109
Dysphagy (n.) (Med.)【醫】嚥下困難 Difficulty in swallowing, or inability to swallow.
Syn: aglutition. Dysphonia
Dysphagia (n.) Condition in which swallowing is difficult or painful.
Dysphonia (n.) Alt. of Dysphony.
Dysphony (n.) (Med.) 聲音障礙 A difficulty in producing vocal sounds; enfeebled or depraved voice.
Dysphonia (n.) Speech disorder attributable to a disorder of phonation.
Dysphoria (n.) (Med.) 【醫】煩躁不安 Impatience under affliction; morbid restlessness; dissatisfaction; the fidgets.
Dysphoria (n.) Abnormal depression and discontent [ant: euphoria, euphory].
Dyspnoea (n.) (Med.) Difficulty of breathing.
Dyspnoea (n.) Difficult or labored respiration [syn: dyspnea, dyspnoea].
Dyspnoic (a.) Affected with shortness of breath; relating to dyspnoea.
Dysprosium (n.) 鏑 (Chem.) An element of the rare earth-group. Symbol Dy; at. wt., 162.5.
Dysprosium (n.) A trivalent metallic element of the rare earth group; forms compounds that are highly magnetic [syn: dysprosium, Dy, atomic number 66]
Dysprosium
Symbol: Dy
Atomic number: 66
Atomic weight: 162.50
Metallic with a bright silvery-white lustre. Dysprosium belongs to the lanthanoids. It is relatively stable in air at room temperatures, it will however dissolve in mineral acids, evolving hydrogen. It is found in from rare-earth minerals. There are seven natural isotopes of dysprosium, and eight radioisotopes, Dy-154 being the most stable with a half-life of 3*10^6 years. Dysprosium is used as a neutron absorber in nuclear fission reactions, and in compact disks. It was discovered by Paul Emile Lecoq de Boisbaudran in 1886 in France. Its name comes from the Greek word dysprositos, which means hard to obtain.
Dysteleology (n.) (Biol.) The doctrine of purposelessness; a term applied by Haeckel to that branch of physiology which treats of rudimentary organs, in view of their being useless to the life of the organism.
To the doctrine of dysteleology, or the denial of fina causes, a proof of the real existence of such a thing as instinct must necessarily be fatal. -- Word (Dynamic Sociology).
Dystocia (n.) (Med.) Difficult delivery pr parturition.
Dystome (a.) (Min.) Cleaving with difficulty.
Note: Datolite was called dystome spar by Mohs. Dysuria
Dysuria (n.) Alt. of Dysury
Dysury (n.) (Med.) Difficult or painful discharge of urine.
Dysuria (n.) Painful or difficult urination.
Dysuric (a.) Pertaining to, or afflicted with, dysury. Dzeren
Dzeren (n.) Alt. of Dzeron
Dzeron (n.) (Zool.) The Chinese yellow antelope ({Procapra gutturosa), a remarkably swift-footed animal, inhabiting the deserts of Central Asia, Thibet, and China.
Dziggetai (n.) (Zool.) The kiang, a wild horse or wild ass of Thibet ({Asinus hemionus).