head-upadj.

Brit.

/ˈhɛdˌʌp/, U.S.

/ˈhɛdˈəp/

Origin: Formed within English, by compounding. Etymons: head n.¹, up adv.¹

Etymology: < head n.¹ + up adv.¹

1. Of the position of a person's or animal's body: such that the head (esp. as opposed to the feet) is raised or uppermost; vertical, upright. Also: assuming or characterized by such a position.In Medical use esp. with reference to the position of a patient who is lying down with the head elevated.

ΚΠ

1900 Philos. Trans. (Royal Soc.) B. 193 76 (heading) Cerebral Anæmia produced by Fixation in the Vertical Head-up Position.

1914 G. W. Norris Blood-pressure xvii. 337 In the morphinized animal carotid pressure falls owing to this effect of gravity in the head-up posture.

1945 Brit. Med. Jrnl. 8 Sept. 340/2 In the head-up position, blood is pooled in the veins of the legs, and right auricular pressure decreases further.

1974 W. Condry Woodlands v. 63 The nuthatch..is a head-down bird not a head-up bird like a creeper or a woodpecker.

1986 New Scientist 6 Feb. 40/1 The researchers could turn the stuffed defenders to approach an incoming bird and perform a ‘head-up’ aggressive display.

2011 L. F. Macksey Surg. Procedures & Anesthetic Implications xvi. 604/2 Make sure that the patient is in a head-up position and wide awake before attempting extubation.

2. Of instrument readings in an aircraft, vehicle, etc.: shown so as to be visible without lowering one's eyes from the view ahead, typically through being projected on to the windscreen or visor; using or containing such a display. Cf. heads up adj. 2.

ΘΚΠ

society > travel > means of travel > a conveyance > vehicle > powered vehicle > parts and equipment of motor vehicles > [adjective] > type of instrument display

head-up1960

society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > controls and instruments > [adjective] > type of instrument display

head-up1960

heads up1964

1960 Times 15 Dec. 4/3 Mr. Naish said that some 1,200 hours of laboratory ‘flying’ with the head-up device used in conjunction with the flight simulator had shown that accuracy in following flight directions was twice as good as with the normal instruments.

1972 Drive Spring 43/2 Road-speed reflected in the windscreen glass by the safety-first ‘head up’ display.

1990 D. J. Calvert Harrier (‘Aircraft Illustr.’ Special) 13/2 An inertial nav/attack system was specified..with a Smiths Head-Up Display and a moving map display.

2004 Pop. Sci. Feb. 20/2 Head-up night vision systems act like infrared headlights.

This entry has been updated (OED Third Edition, June 2013; most recently modified version published online March 2022).

单词	head-up
释义	head-upadj. Brit. /ˈhɛdˌʌp/, U.S. /ˈhɛdˈəp/ Origin: Formed within English, by compounding. Etymons: head n.¹, up adv.¹ Etymology: < head n.¹ + up adv.¹ 1. Of the position of a person's or animal's body: such that the head (esp. as opposed to the feet) is raised or uppermost; vertical, upright. Also: assuming or characterized by such a position.In Medical use esp. with reference to the position of a patient who is lying down with the head elevated. ΚΠ 1900 Philos. Trans. (Royal Soc.) B. 193 76 (heading) Cerebral Anæmia produced by Fixation in the Vertical Head-up Position. 1914 G. W. Norris Blood-pressure xvii. 337 In the morphinized animal carotid pressure falls owing to this effect of gravity in the head-up posture. 1945 Brit. Med. Jrnl. 8 Sept. 340/2 In the head-up position, blood is pooled in the veins of the legs, and right auricular pressure decreases further. 1974 W. Condry Woodlands v. 63 The nuthatch..is a head-down bird not a head-up bird like a creeper or a woodpecker. 1986 New Scientist 6 Feb. 40/1 The researchers could turn the stuffed defenders to approach an incoming bird and perform a ‘head-up’ aggressive display. 2011 L. F. Macksey Surg. Procedures & Anesthetic Implications xvi. 604/2 Make sure that the patient is in a head-up position and wide awake before attempting extubation. 2. Of instrument readings in an aircraft, vehicle, etc.: shown so as to be visible without lowering one's eyes from the view ahead, typically through being projected on to the windscreen or visor; using or containing such a display. Cf. heads up adj. 2. ΘΚΠ society > travel > means of travel > a conveyance > vehicle > powered vehicle > parts and equipment of motor vehicles > [adjective] > type of instrument display head-up1960 society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > controls and instruments > [adjective] > type of instrument display head-up1960 heads up1964 1960 Times 15 Dec. 4/3 Mr. Naish said that some 1,200 hours of laboratory ‘flying’ with the head-up device used in conjunction with the flight simulator had shown that accuracy in following flight directions was twice as good as with the normal instruments. 1972 Drive Spring 43/2 Road-speed reflected in the windscreen glass by the safety-first ‘head up’ display. 1990 D. J. Calvert Harrier (‘Aircraft Illustr.’ Special) 13/2 An inertial nav/attack system was specified..with a Smiths Head-Up Display and a moving map display. 2004 Pop. Sci. Feb. 20/2 Head-up night vision systems act like infrared headlights. This entry has been updated (OED Third Edition, June 2013; most recently modified version published online March 2022). < adj.1900
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