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[jahyuh r] /dʒaɪər/

a ring or circle.
a circular course or motion.
Oceanography. a ringlike system of ocean currents rotating clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.
a circular or spiral movement or path
a ring, circle, or spiral
(intransitive) to whirl

1560s, “a circular motion;” as a verb, “to turn round,” early 15c.; from Latin gyrus “circle, circular course, round, ring,” and its derived verb gyrare, from Greek gyros “circle, ring,” related to gyrós “rounded,” perhaps from PIE root *geu- “to bend, curve” (cf. Armenian kor “crooked,” Lithuanian gurnas “hip, ankle, bone,” Norwegian kaure “a curly lock of hair”).
A spiral oceanic surface current driven primarily by the global wind system and constrained by the continents surrounding the three ocean basins (Atlantic, Pacific, and Indian). Each ocean basin has a large gyre in the subtropical region, centered around 30° north and south latitude. Smaller gyres occur at 50° north latitude in the North Atlantic and Pacific Oceans. The direction of a gyre’s rotation is determined by the prevailing winds in the region, with the large subtropical gyres rotating clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.


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  • Gyrene

    [jahy-reen, jahy-reen] /ˈdʒaɪ rin, dʒaɪˈrin/ noun, Slang. 1. a member of the U.S. Marine Corps. noun AUS Marine; leatherneck (1894+)

  • Gyri

    [jahy-rahy] /ˈdʒaɪ raɪ/ noun 1. plural of . [jahy-ruh s] /ˈdʒaɪ rəs/ noun, plural gyri [jahy-rahy] /ˈdʒaɪ raɪ/ (Show IPA). Anatomy. 1. a convolution, especially of the brain. /ˈdʒaɪrəs/ noun (pl) gyri (ˈdʒaɪraɪ) 1. another name for convolution (sense 3) n. convolution between grooves, 1842, from Latin gyrus “circle, circuit, career,” from Greek gyros “ring, […]

  • Gyrfalcon

    [jur-fawl-kuh n, -fal-, -faw-kuh n] /ˈdʒɜrˌfɔl kən, -ˌfæl-, -ˌfɔ kən/ noun 1. a large falcon, Falco rusticolus, of arctic and subarctic regions, having white, gray, or blackish color phases: now greatly reduced in number. /ˈdʒɜːˌfɔːlkən; -ˌfɔːkən/ noun 1. a very large rare falcon, Falco rusticolus, of northern and arctic regions: often used for hunting n. […]

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