protoplanet

English

Etymology

proto- +‎ planet

Noun

protoplanet (plural protoplanets)

1. 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
   • 2012, BioWare, Mass Effect 3 (Science Fiction), Redwood City: Electronic Arts, →OCLC, PC, scene: Tyrix:

     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.

Derived terms

• protoplanetary

Translations

astronomical object

• Catalan: protoplaneta f
• Chinese:

  Mandarin: 原行星 (yuánxíngxīng)

• Czech: protoplaneta f
• Finnish: protoplaneetta
• French: protoplanète (fr) f
• German: Protoplanet
• Ido: protoplaneto
• Irish: prótapláinéad m
• Italian: protopianeta m
• Japanese: 原始惑星
• Kabuverdianu: protoplaneta

  ALUPEC: protoplanita, protoplaneta

• Lithuanian: proplaneta
• Norwegian: protoplanet
• Polish: protoplaneta (pl) f
• Portuguese: protoplaneta m
• Romanian: protoplanetă f
• Russian: протоплане́та (ru) f (protoplanéta)
• Slovak: protoplanéta f
• Spanish: protoplaneta (es) m
• Swedish: protoplanet