Etymology
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frigid (adj.)
1620s, "intensely cold," from Latin frigidus "cold, chill, cool," figuratively "indifferent," also "flat, dull, trivial," from stem of frigere "be cold;" related to noun frigus "cold, coldness, frost," from Proto-Italic *srigos-, from PIE root *srig- "cold" (source also of Greek rhigos "cold, frost"). The meaning "wanting in sexual heat" is attested from 1650s, originally of males. Related: Frigidly; frigidness.
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frisson (n.)
"emotional thrill," 1777 (Walpole), from French frisson "fever, illness; shiver, thrill" (12c.), from Latin frigere "to be cold" (see frigid). Scant record of the word in English between Walpole's use and 1888.
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frigorific (adj.)
"causing cold," 1660s, from French frigorifique, from Late Latin frigorificus "cooling," from frigor-, stem of Latin frigus "cold, cool, coolness" (see frigid) + -ficus "making, doing," from combining form of facere "to make, do" (from PIE root *dhe- "to set, put").
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frigidity (n.)

early 15c., frigidite, "coldness," from Old French frigidité (15c.), from Late Latin frigiditatem (nominative frigiditas) "the cold," from Latin frigidus "cold" (see frigid). In reference to sexual impotence, 1580s, originally of men; by 1903 of women.

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infrigidation (n.)
early 15c., in medicine, "a making cold, cooling; a state of coolness," from Late Latin infrigidationem (nominative infrigidatio) "a cooling," noun of action from past participle stem of infrigidare "to make cold," from in- "in, into" (from PIE root *en "in") + frigidare, from frigidus "cold" (see frigid). A verb infrigidate is attested from 1540s.
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refrigeration (n.)

late 15c., refrigeracion, "act of cooling or freezing," originally in alchemy, from Latin refrigerationem (nominative refrigeratio) "a cooling, mitigation of heat," especially in sickness, noun of action from past participle stem of refrigerare "to cool down," from re- "back, again" (see re-) + frigerare "make cool," from frigus (genitive frigoris) "cold" (see frigid). Specifically "freezing provisions as a means of preserving them" by 1881.

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refrigerant (adj.)

1590s, originally of medicinal plasters, etc., "abating heat, cooling;" from Latin refrigerans, present participle of refrigerare "make cool or cold, to cool down," from re- "again" (see re-) + frigerare "make cool," from frigus (genitive frigoris) "cold" (see frigid). As a noun from 1670s, originally of medicinal agents; sense of "anything which abates heat, a freezing agent" is by 1885.

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sang-froid (n.)

also sangfroid, "presence of mind, coolness, mental composure," 1712, from French sang froid, literally "cool blood," from sang "blood" (from Latin sanguis; see sanguinary) + froid "cold" (from Latin frigidus; see frigid). "In the 17th c. the expression was in France often written erroneously sens froid, as if it contained sens "sense" instead of the homophonous sang "blood'." [OED].

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icy (adj.)
Old English isig; see ice (n.) + -y (2). Modern use is said to be a late Middle English re-formation. Figurative sense "characterized by coldness or chill, frigid" (of manners, expressions, etc.) is from 1590s. Similar formation in Dutch ijzig, German eisig, Swedish isig. Related: Icily; iciness.
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zone (n.)

late 14c., from Latin zona "geographical belt, celestial zone," from Greek zōnē "a belt, the girdle worn by women at the hips," from zōnnynai "to gird," from PIE root *yos- "to gird" (source also of Avestan yasta- "girt," Lithuanian juosiu, juosti "to gird," Old Church Slavonic po-jasu "girdle"). The 10c. Anglo-Saxon treatise on astronomy translates Latin quinque zonas as fyf gyrdlas.

Originally one of the five great divisions of the earth's surface (torrid, temperate, frigid; separated by tropics of Cancer and Capricorn and Arctic and Antarctic circles); meaning "any discrete region" is first recorded 1822. Zone defense in team sports is recorded from 1927.

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