Dynamometer noun [ Confer French dynamomètre . See Dynameter .] An apparatus for measuring force or power; especially, muscular effort of men or animals, or the power developed by a motor, or that required to operate machinery.

» It usually embodies a spring to be compressed or weight to be sustained by the force applied, combined with an index, or automatic recorder, to show the work performed.

Dynamometric, Dynamometrical adjective Relating to a dynamometer, or to the measurement of force doing work; as, dynamometrical instruments.

Dynamometry noun The art or process of measuring forces doing work.

Dynast noun [ Latin dynastes , Greek ..., from ... to be able or strong: confer French dynaste . See Dynamic .]
1. A ruler; a governor; a prince.

2. A dynasty; a government. [ Obsolete]

Dynasta noun [ New Latin See Dynast .] A tyrant. [ Obsolete] Milton.

Dynastic adjective [ Greek ... of a dynast, from ...: confer French dunastique .] Of or relating to a dynasty or line of kings. Motley.

Dynastical adjective Dynastic.

Dynastidan noun [ Greek ..., fem. of .... See Dynast . The name alludes to the immense size of some species.] (Zoology) One of a group of gigantic, horned beetles, including Dynastus Neptunus , and the Hercules beetle ( D. Hercules ) of tropical America, which grow to be six inches in length.

Dynasty (dī"n a s*tȳ or dĭn" a s*tȳ; 277) noun ; plural Dynasties (-tĭz). [ Greek dynastei`a lordship, from dynastey`ein to hold power or lordship, from dyna`sths : confer French 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 noun [ Formed from Greek ... 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, from the Greek ... hard, ill, and signifying ill , bad , hard , difficult , and the like; confer the prefixes, Sanskrit dus -, Goth. tuz -, Old High German zur -, German zer -, Anglo-Saxon to -, Icelandic tor -, Ir. do -.

Dyscrasia noun [ New Latin dyscrasia , from Greek dyskrasi`a ; dys- bad + kra^sis mixture, from keranny`nai to mix: confer French dycrasie .] (Medicine) An ill habit or state of the constitution; -- formerly regarded as dependent on a morbid condition of the blood and humors.

Dyscrasite noun [ Greek dys- bad + ... compound.] (Min.) A mineral consisting of antimony and silver.

Dyscrasy noun ; plural Discrasies Dycrasia.

Sin is a cause of dycrasies and distempers.

Jer. Taylor.

Dysenteric, Dysenterical adjective [ Latin dysentericus , Greek ...; confer French dysentérigue .] Of or pertaining to dysentery; having dysentery; as, a dysenteric patient. " Dysenteric symptoms." Copland.

Dysentery noun [ Latin dysenteria , Greek ...; dys- ill, bad + ..., plural ..., intestines, from 'ento`s within, from ... in, akin to English in : confer French dysenterie . See Dys , and In .] (Medicine) 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.

Dysgenesic adjective Not procreating or breeding freely; as, one race may be dysgenesic with respect to another. Darwin.

Dysgenesis noun [ Prefix 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.

Dyslogistic adjective [ Greek dys- ill, bad, + ... discourse, from ... 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.

Dysluite noun [ Greek dys- ill, hard + ... to loose, dissolve.] (Min.) A variety of the zinc spinel or gahnite.

Dyslysin noun [ Greek 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.

Dysmenorrhea noun [ Greek dys- ill, hard + ... month + ... to flow.] (Medicine) Difficult and painful menstruation.

Dysnomy noun [ Greek ...; dys- ill, bad + ... law.] Bad legislation; the enactment of bad laws. Cockeram.

Dysodile noun [ Greek ... 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.

Dyspepsia, Dyspepsy (?; 277), [ Latin dyspepsia , Greek ..., from ... hard to digest; dys- ill, hard + ... to cook, digest; akin to English cook : confer French dyspepsie . See Dys- , and 3d Cook.] (Medicine) 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.

Dyspeptic noun A person afflicted with dyspepsia.

Dyspeptic, Dyspeptical adjective Pertaining to dyspepsia; having dyspepsia; as, a dyspeptic or dyspeptical symptom.

Dyspeptone noun [ Prefix dys- + peptone .] (Physiol. Chem.) An insoluble albuminous body formed from casein and other proteid substances by the action of gastric juice. Meissner.

Dysphagia, Dysphagy noun [ New Latin dysphagia , from Greek dys- ill, hard + ... to eat.] (Medicine) Difficulty in swallowing.

Dysphonia, Dysphony noun [ New Latin dysphonia , Greek ...; dys- ill, hard + ... sound, voice: confer French dysphonie .] (Medicine) A difficulty in producing vocal sounds; enfeebled or depraved voice.

Dysphoria noun [ New Latin , from Greek ..., from ... hard to bear; dys- ill, hard + fe`rein to bear: confer French dysphorie .] (Medicine) Impatience under affliction; morbid restlessness; dissatisfaction; the fidgets.

Dyspnœa noun [ Latin , from Greek ..., from ... short of breath; prefix dys- ill, hard + ..., ..., breathing, ... to blow, breathe: confer French dyspnée .] (Medicine) Difficulty of breathing.

Dyspnoic adjective (Medicine) Affected with shortness of breath; relating to dyspnœa.

Dysprosium noun [ New Latin , from Greek dyspro`sitos hard to get at.] (Chemistry) An element of the rare earth-group. Symbol Dy ; at. wt., 162.5.

Dysteleology noun [ Prefix dys- + teleology .] (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 final causes, a proof of the real existence of such a thing as instinct must necessarily be fatal.

Word (Dynamic Sociology).

Dystocia noun [ New Latin , from Greek ...; dys- ill, hard + to`kos delivery.] (Medicine) Difficult delivery pr parturition.

Dystome adjective [ Greek dys- ill, hard + tomo`s cutting, diate`mnein to cut.] (Min.) Cleaving with difficulty.

» Datolite was called dystome spar by Mohs.

Dysuria, Dysury noun [ Latin dysuria , Greek ...; dys- + ... urine: confer French dysurie .] (Medicine) Difficult or painful discharge of urine.

Dysuric adjective [ Greek ...: confer French dysurique .] Pertaining to, or afflicted with, dysury.

Dysæsthesia noun [ New Latin , from Greek dys- ill, bad + ... to perceive, to feel.] (Medicine) Impairment of any of the senses, esp. of touch.

Dzeren, Dzeron noun (Zoology) The Chinese yellow antelope ( Procapra gutturosa ), a remarkably swift-footed animal, inhabiting the deserts of Central Asia, Thibet, and China.

Dziggetai noun (Zoology) The kiang, a wild horse or wild ass of Thibet ( Asinus hemionus ).

» The name is sometimes applied also to the koulan or onager. See Koulan .