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Origin and history of gyro-

gyro-

word-forming element meaning "gyrating" or "gyroscope," from Greek gyros "a ring, circle" (see gyre (n.)).

Entries linking to gyro-

gyre(n.)

1560s, "a circular motion," from Latin gyrus "circle, circular course, round, ring," from Greek gyros "a circle, ring," related to gyrós "rounded," perhaps from PIE root *geu- "to bend, curve" (source also of Armenian kor "crooked," Lithuanian gurnas "hip, ankle, bone," Norwegian kaure "a curly lock of hair"). The noun is attested in Middle English only in reference to ship's tackle (early 15c.).

gyrocopter(n.)

1915, from gyro- + ending as in helicopter.

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matrix
late 14c., matris, matrice, "uterus, womb," from Old French matrice "womb, uterus" and directly from Latin mātrix (genitive mātricis) "pregnant animal," in Late Latin "womb," also "source, origin," from māter (genitive mātris) "mother" (see mother (n.1)). The many figurative and
drone
Middle English drane, drone, "male honeybee," from Old English dran, dræn, from Proto-Germanic *dran- (source also of Middle Dutch drane; Old High German treno; German Drohne, which is from Middle Low German drone), probably imitative (compare Lithuanian tranni, Greek thronax "a
catharsis
1770, "a bodily purging" (especially of the bowels), from Latinized form of Greek katharsis "purging, cleansing," from stem of kathairein "to purify, purge," from katharos "pure, clear of dirt, clean, spotless; open, free; clear of shame or guilt; purified" (with most of the exte
compass
c. 1300, "space, area, extent, circumference," from Old French compas "circle, radius; size, extent; pair of compasses" (12c.), from compasser "to go around, measure (with a compass); divide equally," from Vulgar Latin *compassare "to pace out," from Latin com "with, together" (s
derogatory
c. 1500, "detracting or tending to lessen authority, rights, or standing by taking something away from," from Late Latin derogatorius, from Latin derogatus, past participle of derogare "to take away, detract from, diminish," also "repeal partly, restrict, modify," from de "away"
crestfallen
"dejected, dispirited," 1580s, creast falne, it has the form of a past-participle adjective, but the verb crestfall is recorded only from 1610s, in reference to diseased horses, and is rare. It's possible that the image behind this use of the word is not having the crest fallen,
retreat
c. 1300, retrete, "a step backward;" late 14c., "act of retiring or withdrawing; military signal for retiring from action or exercise," from Old French retret, retrait, noun use of past participle of retrere "draw back," from Latin retrahere "draw back, withdraw, call back," from
tarot
1590s, from French tarot (16c.), from Old Italian tarocchi (singular tarocco), a word of unknown origin, perhaps from Arabic taraha "he rejected, put aside." Originally an everyday game deck in much of Europe (though not in Britain), their occult and fortune-telling use seems to
pomp
c. 1300, "ostentation and display," especially on parade, from Old French pompe "pomp, magnificence" (13c.) and directly from Latin pompa "procession, pomp," from Greek pompē "solemn procession, display, escort," literally "a sending," from pempein "to send," which is of unknown
so long
parting salutation, 1860, of unknown origin, perhaps from a German idiom (compare German parting salutation adieu so lange, the full sense of which probably is something like "farewell, whilst (we're apart)"); or perhaps from or influenced by Hebrew shalom (via Yiddish sholom). S

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