meteoroidn.

Brit.

/ˈmiːtɪərɔɪd/, U.S.

/ˈmidiəˌrɔɪd/

Origin: Formed within English, by derivation. Etymons: meteor n.¹, -oid suffix.

Etymology: < meteor n.¹ + -oid suffix.

Astronomy.

A small body or particle moving through interplanetary space, usually belonging to a stream of such objects orbiting the sun along the path of an originating comet, with the potential to become a meteor or meteorite if it enters the earth's atmosphere. Frequently attributive (see also Compounds).

ΘΚΠ

the world > the universe > constellation > comet or meteor > meteor > [noun] > meteoroid

meteoroid1865

meteor1884

1865 H. A. Newton in Amer. Jrnl. Sci. 39 198 The term meteoroid will be used to designate such a body before it enters the earth's atmosphere.

1867 T. L. Phipson Meteors, Aerolites & Falling Stars xvi. 176 The perturbations of meteoroid masses circulating in space..must be considerable.

1871 Rep. Brit. Assoc. 45 A very small nebular mass of meteoroids or of cometoids having been deflected [etc.].

1946 G. Stimpson Bk. about Thousand Things 256 Scientifically they are known as meteoroids before they fall, as meteors while they are falling, and as meteorites after they have landed.

1977 A. Hallam Planet Earth 21/1 Absolute calibration of the meteoroid flux (i.e., the ‘population’ of meteoroids) in the vicinity of Mars is more difficult.

1994 Nature 6 Jan. 35/2 Iron meteoroids,..whose potential for cratering the Earth's surface has been well studied.

Compounds

meteoroid bumper n. = meteor bumper n. at meteor n.¹ and adj.¹ Compounds 2.

ΘΚΠ

society > travel > air or space travel > a means of conveyance through the air > spacecraft > parts of spacecraft > [noun] > other parts of spacecraft

meteor bumper1951

meteoroid bumper1964

outrigger1969

1964 J. L. Nayler Dict. Astronaut. 163 Meteoroid bumpers, bumpers for the protection of the main shell of a spacecraft from the impact of meteoroids, usually thin sheets or foils of beryllium.

1988 Aerospace Amer. (Nexis) June 24 A meteoroid bumper uses two or more walls to lower shielding weight.

meteoroid stream n. = meteor stream n. (b) at meteor n.¹ and adj.¹ Compounds 2.

ΚΠ

1973 Astrophysics & Space Sci. 23 13 An interesting aspect of the interaction between planets (or asteroids) and meteoroid-streams is the possibility of a stabilizing effect these interactions might have on certain orbital characteristics.

1992 Astron. Now July 41/3 Halley's Comet has spawned a meteoroid stream.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	meteoroid
释义	meteoroidn. Brit. /ˈmiːtɪərɔɪd/, U.S. /ˈmidiəˌrɔɪd/ Origin: Formed within English, by derivation. Etymons: meteor n.¹, -oid suffix. Etymology: < meteor n.¹ + -oid suffix. Astronomy. A small body or particle moving through interplanetary space, usually belonging to a stream of such objects orbiting the sun along the path of an originating comet, with the potential to become a meteor or meteorite if it enters the earth's atmosphere. Frequently attributive (see also Compounds). ΘΚΠ the world > the universe > constellation > comet or meteor > meteor > [noun] > meteoroid meteoroid1865 meteor1884 1865 H. A. Newton in Amer. Jrnl. Sci. 39 198 The term meteoroid will be used to designate such a body before it enters the earth's atmosphere. 1867 T. L. Phipson Meteors, Aerolites & Falling Stars xvi. 176 The perturbations of meteoroid masses circulating in space..must be considerable. 1871 Rep. Brit. Assoc. 45 A very small nebular mass of meteoroids or of cometoids having been deflected [etc.]. 1946 G. Stimpson Bk. about Thousand Things 256 Scientifically they are known as meteoroids before they fall, as meteors while they are falling, and as meteorites after they have landed. 1977 A. Hallam Planet Earth 21/1 Absolute calibration of the meteoroid flux (i.e., the ‘population’ of meteoroids) in the vicinity of Mars is more difficult. 1994 Nature 6 Jan. 35/2 Iron meteoroids,..whose potential for cratering the Earth's surface has been well studied. Compounds meteoroid bumper n. = meteor bumper n. at meteor n.¹ and adj.¹ Compounds 2. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > spacecraft > parts of spacecraft > [noun] > other parts of spacecraft meteor bumper1951 meteoroid bumper1964 outrigger1969 1964 J. L. Nayler Dict. Astronaut. 163 Meteoroid bumpers, bumpers for the protection of the main shell of a spacecraft from the impact of meteoroids, usually thin sheets or foils of beryllium. 1988 Aerospace Amer. (Nexis) June 24 A meteoroid bumper uses two or more walls to lower shielding weight. meteoroid stream n. = meteor stream n. (b) at meteor n.¹ and adj.¹ Compounds 2. ΚΠ 1973 Astrophysics & Space Sci. 23 13 An interesting aspect of the interaction between planets (or asteroids) and meteoroid-streams is the possibility of a stabilizing effect these interactions might have on certain orbital characteristics. 1992 Astron. Now July 41/3 Halley's Comet has spawned a meteoroid stream. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1865
随便看	quasi-simultaneously quasi-social quasi-stable quasi-statement quasi-stationary quasi-stellar quasi-stellar object quick-compounded quick-conceiving quick-decaying quick-designing quick-devouring quick-disconnect quick-drawn quick-drying quick-eared quick-eyed quick-fading quick-falling quick-fingered quick-fire quick-firer quick-firing quick-fix quick-flowing