countdownn.

/ˈkaʊntˌdaʊn/

Etymology: < count n.¹, count v. + down adv.

Originally U.S.

a. The action of counting in reverse, from a given number to zero, usually in seconds, to mark the lapse of time before an explosion, the launching of a missile, or the like; also, the period of time preceding such an event or the procedures carried out in that time. Also attributive.

ΘΚΠ

the world > time > particular time > [noun] > an appointed or fixed time, day, or date > for something to begin or be released

release date1904

effective date1909

zero hour1915

zero day1917

start date1920

countdown1953

T1959

1953 News (Birmingham, Alabama) 4 June 1/6 Observers on the mountain were able to hear the count-down on the drop from the control tower.

1953 Monsanto Mag. (U.S.) July 4 Time on the range is expressed in minutes before a missile is to be fired. This is called a ‘count down’.

1958 Observer 2 Feb. 1/2 The count-down began. At the count of 11 the very top of the rocket started spinning. Two..one..and then the firing command.

1958 Times 1 Mar. 6/3 The missile had been on its pad for days before firing, and the actual count-down, the exhaustive last-minute check of all its components, took many hours.

1958 ‘P. Bryant’ Two Hours to Doom 61 Brown..turned the face of a count-down clock until the figure eighty-four showed in the..datum window.

1969 Times 3 June (Suppl.) p. ii/8 Three astronauts..were doing a simulated countdown for the first manned Apollo flight.

b. transferred and figurative.

ΚΠ

1959 W. K. Richmond Brit. Birds of Prey xiii. 142 Ready, now, for the final count-down. Eight yards, seven, six, five, four..and once again the hawk glanced over its shoulder.

1960 Stand IV. 5 The months began the count~down to war.

1962 Times 29 Nov. 4/1 Excitement is mounting here as the count-down begins for the first Test match on Friday.

1968 Listener 15 Aug. 200/2 One by one they step up, receive a countdown and deliver their instant punditry.

This entry has not yet been fully updated (first published 1972; most recently modified version published online September 2020).

单词	countdown
释义	countdownn. /ˈkaʊntˌdaʊn/ Etymology: < count n.¹, count v. + down adv. Originally U.S. a. The action of counting in reverse, from a given number to zero, usually in seconds, to mark the lapse of time before an explosion, the launching of a missile, or the like; also, the period of time preceding such an event or the procedures carried out in that time. Also attributive. ΘΚΠ the world > time > particular time > [noun] > an appointed or fixed time, day, or date > for something to begin or be released release date1904 effective date1909 zero hour1915 zero day1917 start date1920 countdown1953 T1959 1953 News (Birmingham, Alabama) 4 June 1/6 Observers on the mountain were able to hear the count-down on the drop from the control tower. 1953 Monsanto Mag. (U.S.) July 4 Time on the range is expressed in minutes before a missile is to be fired. This is called a ‘count down’. 1958 Observer 2 Feb. 1/2 The count-down began. At the count of 11 the very top of the rocket started spinning. Two..one..and then the firing command. 1958 Times 1 Mar. 6/3 The missile had been on its pad for days before firing, and the actual count-down, the exhaustive last-minute check of all its components, took many hours. 1958 ‘P. Bryant’ Two Hours to Doom 61 Brown..turned the face of a count-down clock until the figure eighty-four showed in the..datum window. 1969 Times 3 June (Suppl.) p. ii/8 Three astronauts..were doing a simulated countdown for the first manned Apollo flight. b. transferred and figurative. ΚΠ 1959 W. K. Richmond Brit. Birds of Prey xiii. 142 Ready, now, for the final count-down. Eight yards, seven, six, five, four..and once again the hawk glanced over its shoulder. 1960 Stand IV. 5 The months began the count~down to war. 1962 Times 29 Nov. 4/1 Excitement is mounting here as the count-down begins for the first Test match on Friday. 1968 Listener 15 Aug. 200/2 One by one they step up, receive a countdown and deliver their instant punditry. This entry has not yet been fully updated (first published 1972; most recently modified version published online September 2020). < n.1953
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