Etymology
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time zone (n.)

by 1885, from time (n.) + zone (n.). As in Britain and France, the movement to regulate time nationally came from the railroads.

Previous to 1883 the methods of measuring time in the United States were so varied and so numerous as to be ludicrous. There were 50 different standards used in the United States, and on one road between New York and Boston, whose actual difference is 12 minutes, there were three distinct standards of time. Even small towns had two different standards one known as "town" or local time and the other "railroad" time.
... At noon on November 18, 1883, there was a general resetting of watches and clocks all over the United States and Canada, and the four great time zones, one hour apart, into which the country was divided came into being. So smoothly did the plan work that the general readjustment was accomplished without great difficulty and it has worked satisfactorily ever since. [Railroad Trainman, September 1909]
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time-out (n.)
also time out, 1896 in sports, 1939 in other occupations; from 1980 as the name of a strategy in child discipline; from time + out.
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time-line (n.)
also timeline, 1876, from time (n.) + line (n.).
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time-stamp (n.)
1888, from time (n.) + stamp (n.). As a verb by 1906. Related: Time-stamped.
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one-time (adj.)

"that was, former," by 1850, from one + time (n.).

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long-term (adj.)
also longterm, 1876, originally in insurance underwriting, from long (adj.) + term (n.).
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long-hair (n.)

also longhair, 1893, "cat with long hair," from long (adj.) + hair (n.). As "intellectual," especially in musical tastes, "devotee of classical music," 1920 (late 19c. long hair was noted as a characteristic of classical musicians, perhaps inspired by the famous locks of Liszt). Sense of "hippie" attested from 1969. The adjective long-haired is attested from mid-15c.

Forty years ago, a music teacher who was not born abroad and who did not wear long hair was regarded with suspicion. He was spurious—not the real thing. On the face of it he could not be a good musician. [W. Francis Gates, in "The Music Student," vol. i, no. 3, October 1915]
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long-headed (adj.)
"discerning," 1700, slang, from long (adj.) + -headed. Literal sense is from 1856. A long head "mind characterized by shrewdness and sagacity" is by 1793.
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long johns (n.)
type of long, warm underwear, 1943, originally made for U.S. GIs in World War II. Earlier as the name of a type of pastry (1919). Also used of sorts of worm, potato, table, sled, etc.
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