Part 593

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Dy"nas*ty (d"nas*t or dn"as*t; 277), n.; pl. Dynasties (-tz). [Gr. dynastei`a lordship, fr. dynastey`ein to hold power or lordship, fr. dyna`sths: cf. F. dynastie dynasty. See Dynast.] 1. Sovereignty; lordship; dominion. Johnson.

2. A race or succession of kings, of the same line or family; the continued lordship of a race of rulers.

Dyne (?), n. [Formed fr. Gr. &?; power. See Dynamic.] (Physics) The unit of force, in the C. G. S. (Centimeter Gram Second) system of physical units; that is, the force which, acting on a gram for a second, generates a velocity of a centimeter per second.

Dys- (?). An inseparable prefix, fr. the Greek &?; hard, ill, and signifying ill, bad, hard, difficult, and the like; cf. the prefixes, Skr. dus-, Goth. tuz-, OHG. zur-, G. zer-, AS. to-, Icel. tor-, Ir. do-.

||Dys`æs*the"si*a (?), n. [NL., fr. Gr. dys- ill, bad + &?; to perceive, to feel.] (Med.) Impairment of any of the senses, esp. of touch.

||Dys*cra"si*a (?), n. [NL. dyscrasia, fr. Gr. dyskrasi`a; dys- bad + kra^sis mixture, fr. keranny`nai to mix: cf. F. dycrasie.] (Med.) An ill habit or state of the constitution; -- formerly regarded as dependent on a morbid condition of the blood and humors.

Dys"cra*site (?), n. [Gr. dys- bad + &?; compound.] (Min.) A mineral consisting of antimony and silver.

Dys"cra*sy (?), n.; pl. Discrasies (&?;). Dycrasia.

Sin is a cause of dycrasies and distempers.

Jer. Taylor.

{ Dys`en*ter"ic (?), Dys`en*ter"ic*al (?), } a. [L. dysentericus, Gr. &?;; cf. F. dysentérigue.] Of or pertaining to dysentery; having dysentery; as, a dysenteric patient. "Dysenteric symptoms." Copland.

Dys"en*ter*y (?), n. [L. dysenteria, Gr. &?;; dys- ill, bad + &?;, pl. &?;, intestines, fr. 'ento`s within, fr. &?; in, akin to E. in: cf. F. dysenterie. See Dys, and In.] (Med.) A disease attended with inflammation and ulceration of the colon and rectum, and characterized by griping pains, constant desire to evacuate the bowels, and the discharge of mucus and blood.

When acute, dysentery is usually accompanied with high fevers. It occurs epidemically, and is believed to be communicable through the medium of the alvine discharges.

Dys`ge*nes"ic (?), a. Not procreating or breeding freely; as, one race may be dysgenesic with respect to another. Darwin.

||Dys*gen"e*sis (?), n. [Pref. dys- + genesis.] (Biol.) A condition of not generating or breeding freely; infertility; a form of homogenesis in which the hybrids are sterile among themselves, but are fertile with members of either parent race.

Dys`lo*gis"tic (?), a. [Gr. dys- ill, bad, + &?; discourse, fr. &?; to speak.] Unfavorable; not commendatory; -- opposed to eulogistic.

There is no course of conduct for which dyslogistic or eulogistic epithets may be found.

J. F. Stephen.

The paternity of dyslogistic -- no bantling, but now almost a centenarian -- is adjudged to that genius of common sense, Jeremy Bentham.

Fitzed. Hall.

Dys"lu*ite (?), n. [Gr. dys- ill, hard + &?; to loose, dissolve.] (Min.) A variety of the zinc spinel or gahnite.

Dys"ly*sin (?), n. [Gr. dys- ill, hard + &?; a loosing.] (Physiol. Chem.) A resinous substance formed in the decomposition of cholic acid of bile; -- so called because it is difficult to solve.

||Dys*men`or*rhe"a (?), n. [Gr. dys- ill, hard + &?; month + &?; to flow.] (Med.) Difficult and painful menstruation.

Dys"no*my (?), n. [Gr. &?;; dys- ill, bad + &?; law.] Bad legislation; the enactment of bad laws. Cockeram.

Dys"o*dile (?), n. [Gr. &?; ill smell, from &?; ill-smelling; dys- ill, bad + &?; to smell.] (Min.) An impure earthy or coaly bitumen, which emits a highly fetid odor when burning.

{ Dys*pep"si*a (?), Dys*pep"sy (?; 277), }[L. dyspepsia, Gr. &?;, fr. &?; hard to digest; dys- ill, hard + &?; to cook, digest; akin to E. cook: cf. F. dyspepsie. See Dys-, and 3d Cook.] (Med.) A kind of indigestion; a state of the stomach in which its functions are disturbed, without the presence of other diseases, or, if others are present, they are of minor importance. Its symptoms are loss of appetite, nausea, heartburn, acrid or fetid eructations, a sense of weight or fullness in the stomach, etc. Dunglison.

{ Dys*pep"tic (?), Dys*pep"tic*al (?), } a. Pertaining to dyspepsia; having dyspepsia; as, a dyspeptic or dyspeptical symptom.