protoplanet
名词 n.
英文释义
名词 n.
-
An astronomical object, approximately the size of the Moon, formed from the mutual gravitational attraction of planetesimals; they are thought to collide with each other and slowly form planets
— Tyrix, one of the largest objects in Thal's asteroid belt, is a metallic asteroid with an iron-nickel core under a rocky olivine mantle. It is possibly a remnant protoplanet prevented from forming into anything bigger by gravitational disturbances from Xerceo.
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词源
Etymology tree
Proto-Indo-European *per-der.?
Proto-Indo-European *per-der.?
Proto-Indo-European *pér
Proto-Indo-European *-o
Proto-Indo-European *próder.
Ancient Greek πρό (pró)
Ancient Greek -ᾰτος (-ătos)
Ancient Greek πρῶτος (prôtos)
Ancient Greek πρωτο- (prōto-)lbor.
English proto-
English planet
English protoplanet
From proto- + planet.
Proto-Indo-European *per-der.?
Proto-Indo-European *per-der.?
Proto-Indo-European *pér
Proto-Indo-European *-o
Proto-Indo-European *próder.
Ancient Greek πρό (pró)
Ancient Greek -ᾰτος (-ătos)
Ancient Greek πρῶτος (prôtos)
Ancient Greek πρωτο- (prōto-)lbor.
English proto-
English planet
English protoplanet
From proto- + planet.
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数据来源: Wiktionary