Nisus Ni"sus, n. [L., fr. niti, p. p. nisus, to strive.] 1. A striving; an effort; a conatus. [1913 Webster]

A nisus or energizing towards a presented object. --Hickok. [1913 Webster]

2. (Physiol.) (a) The periodic procreative desire manifested in the spring by birds, etc. (b) The contraction of the diaphragm and abdominal muscles to evacuate feces or urine. [Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • nisus — [nī′səs] n. pl. nisus [L < nisus, pp. of niti, to strive: for IE base see CONNIVE] effort; endeavor; impulse; specif., a) a seasonal desire to mate b) the muscular contractions used to expel waste, eggs, or a fetus from the body …   English World dictionary

  • Nisus — Nisus, der Sperber …   Meyers Großes Konversations-Lexikon

  • nisus — index conatus Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • Nisus — ni·sus n. pl. nisus An effort or endeavor to realize an aim. [Latin nisus, from past participle of niti, to strive.] [1] In classical mythology, Nisus (or Nisos) may refer to: Nisus of Nisus and Euryalus, son of Hyrtacus, lover of Euryalus, in… …   Wikipedia

  • NISUS — I. NISUS Comagenae Urbs, Antonin. II. NISUS Hyrtaci fil. Euryalo indissolubili amicitiae vin culô coniunctus; quorum historiam copiosê satis describit Virg. l. 9. Aen. v. 184. III. NISUS Megarensium Rex, prupureo capillô insignis, a quo, cum… …   Hofmann J. Lexicon universale

  • nisus — /nuy seuhs/, n., pl. nisus. an effort or striving toward a particular goal or attainment; impulse. [1690 1700; < L nisus act of planting the feet, effort, equiv. to nit(i) to support or exert oneself + tus suffix of v. action, with tt > s] * * *… …   Universalium

  • nisus — noun (plural nisus) Etymology: Latin, from niti to lean, rely, strive; akin to Latin nictare to wink more at connive Date: 1699 a mental or physical effort to attain an end ; a perfective urge or endeavor …   New Collegiate Dictionary

  • Nisus — Nisos Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Dans la mythologie grecque et romaine, ce nom peut désigner : Nisos, roi de Mégare, père de Scylla ; Euryale et Nisus, compagnons d Énée… …   Wikipédia en Français

  • nisus — (Lat., endeavour, impulse, effort) A central element of Aristotle s theory of nature, rejected in the Renaissance, is that change and movement in nature should be thought of as the operation of a nisus or principle somewhat like aspiration,… …   Philosophy dictionary

  • Nisus — Ni|sus, der; , [ ni:zu:s; lat. nisus = Schwung] (Med., Psych.): (psychischer) Antrieb: N. sexualis (Geschlechtstrieb) …   Universal-Lexikon

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