micrometeoroidn.

Brit.

/ˌmʌɪkrə(ʊ)ˈmiːtɪərɔɪd/, U.S.

/ˌmaɪkrəˈmidiəˌrɔɪd/

Origin: Formed within English, by compounding. Etymons: micro- comb. form, meteoroid n.

Etymology: < micro- comb. form + meteoroid n. Compare micrometeor n., micrometeorite n.

Astronomy.

A tiny meteoric particle, small enough to undergo atmospheric entry without destruction. Cf. micrometeorite n.

ΘΚΠ

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

micrometeor1936

micrometeoroid1954

1954 Mineral. Abstr. 12 242 There may be ‘micrometeorites’ (? micrometeoroids..) too small to suffer ablation and falling as cosmic dust.

1961 Daily Tel. 26 Aug. 1/4 Another earth satellite, Explorer 13, was put into orbit to-day. It will measure dust-like particles in space known as micrometeoroids.

1968 Awake! 22 Sept. 30/2 The suit will be made to protect the astronaut..from tiny particles known as micrometeoroids.

1974 Nature 6 Sept. 17/1 It sent back more than 300 pictures of Jupiter, as well as measurements of magnetic fields, energetic particles,..and micrometeoroids.

1999 Materials World July 421/3 Damage to NASA's Shuttle from atoms of oxygen that exist in low earth orbit and micrometeoroids.

Derivatives

ˌmicrometeoˈroidal adj.

ΘΚΠ

the world > the universe > constellation > comet or meteor > meteor > [adjective] > meteoroid > micro

micrometeoric1958

micrometeoroidal1972

1972 Science 2 June 979/2 The scale of hypervelocity impact craters. on the moon extends down to submillimeter and submicron micrometeoroidal pits on rock surfaces.

1981 Science 10 Apr. 188 The lifetime of such small particles may be much less than the age of the ring system due to micrometeoroidal collisions and/or sputtering by radiation belt particles.

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

单词	micrometeoroid
释义	micrometeoroidn. Brit. /ˌmʌɪkrə(ʊ)ˈmiːtɪərɔɪd/, U.S. /ˌmaɪkrəˈmidiəˌrɔɪd/ Origin: Formed within English, by compounding. Etymons: micro- comb. form, meteoroid n. Etymology: < micro- comb. form + meteoroid n. Compare micrometeor n., micrometeorite n. Astronomy. A tiny meteoric particle, small enough to undergo atmospheric entry without destruction. Cf. micrometeorite n. ΘΚΠ the world > the universe > constellation > comet or meteor > meteor > [noun] > meteoroid > micro micrometeor1936 micrometeoroid1954 1954 Mineral. Abstr. 12 242 There may be ‘micrometeorites’ (? micrometeoroids..) too small to suffer ablation and falling as cosmic dust. 1961 Daily Tel. 26 Aug. 1/4 Another earth satellite, Explorer 13, was put into orbit to-day. It will measure dust-like particles in space known as micrometeoroids. 1968 Awake! 22 Sept. 30/2 The suit will be made to protect the astronaut..from tiny particles known as micrometeoroids. 1974 Nature 6 Sept. 17/1 It sent back more than 300 pictures of Jupiter, as well as measurements of magnetic fields, energetic particles,..and micrometeoroids. 1999 Materials World July 421/3 Damage to NASA's Shuttle from atoms of oxygen that exist in low earth orbit and micrometeoroids. Derivatives ˌmicrometeoˈroidal adj. ΘΚΠ the world > the universe > constellation > comet or meteor > meteor > [adjective] > meteoroid > micro micrometeoric1958 micrometeoroidal1972 1972 Science 2 June 979/2 The scale of hypervelocity impact craters. on the moon extends down to submillimeter and submicron micrometeoroidal pits on rock surfaces. 1981 Science 10 Apr. 188 The lifetime of such small particles may be much less than the age of the ring system due to micrometeoroidal collisions and/or sputtering by radiation belt particles. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1954
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