Rotary Ro"ta*ry, a. [L. rota a wheel. See {Roll}, v., and cf. {barouche}, {Rodomontade}, {Rou['e]}, {Round}, a., {Rowel}.] Turning, as a wheel on its axis; pertaining to, or resembling, the motion of a wheel on its axis; rotatory; as, rotary motion. [1913 Webster]

{Rotary engine}, steam engine in which the continuous rotation of the shaft is produced by the direct action of the steam upon rotating devices which serve as pistons, instead of being derived from a reciprocating motion, as in the ordinary engine; a steam turbine; -- called also {rotatory engine}.

{Rotary pump}, a pump in which the fluid is impelled by rotating devices which take the place of reciprocating buckets or pistons.

{Rotary shears}, shears, as for cloth, metal, etc., in which revolving sharp-edged or sharp-cornered wheels do the cutting.

{Rotary valve}, a valve acting by continuous or partial rotation, as in the four-way cock. [1913 Webster]

The Collaborative International Dictionary of English. 2000.


Look at other dictionaries:

  • Rotary — International Logo de Rotary International Contexte général Champs d action Servir l’intérêt général et faire progresser l entente et la paix dans le monde. Zone d influence …   Wikipédia en Français

  • rotary — [ rɔtari ] n. m. • 1931; mot angl.; lat. rotarius, de rota « roue » ♦ Anglic. Techn. 1 ♦ Appareil de sondage par rotation. 2 ♦ (1953) Système de téléphone automatique. Des rotarys. ● rotary nom masculin (anglais rotary, rotatif) …   Encyclopédie Universelle

  • rotary — ► ADJECTIVE 1) revolving around a centre or axis. 2) acting by means of rotation; having a rotating part or parts: a rotary mower. ► NOUN (pl. rotaries) 1) a rotary machine or device. 2) N. Amer. a traffic roundabout. 3) ( …   English terms dictionary

  • rotary — [rōt′ə rē] adj. [ML rotarius < L rota, wheel: see ROLL] 1. turning around a central point or axis, as a wheel; rotating 2. a) having a rotating part or parts b) having blades that rotate on a hub rather than a reel [a rotary lawn mower] 3 …   English World dictionary

  • rotary — RÓTARY Sistem de foraj mecanic cu circulaţie continuă de fluid şi cu rotirea garniturii de foraj. [pr.: rắutări] – cuv. engl. Trimis de LauraGellner, 14.07.2004. Sursa: DEX 98  rotáry s. n. [pron. tă ri] Trimis de siveco, 10.08.2004. Sursa:… …   Dicționar Român

  • rotary — rotary, rotatory Both are 18c formations and each has a wide range of uses, but in current use rotary is much commoner …   Modern English usage

  • rotary — (adj.) 1731, from M.L. rotarius pertaining to wheels, from L. rota wheel, from PIE root *roto to run, to turn, to roll (Cf. Skt. rathah car, chariot; Avestan ratho; Lith. ratas wheel, ritu I roll; O.H.G. rad, Ger …   Etymology dictionary

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  • Rotary — Rotation Rotary can refer to: * Rotary dial, a rotating telephone dial * Rotary engine, a type of internal combustion engine from the early 20th century * Rotary International, a service organization * Rotary milking shed, a type of milking shed… …   Wikipedia

  • rotary — adj. & n. adj. acting by rotation (rotary drill; rotary pump). n. (pl. ies) 1 a rotary machine. 2 US a traffic roundabout. 3 (Rotary) (in full Rotary International) a worldwide charitable society of businessmen, orig. named from members… …   Useful english dictionary

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