Standard Lemma guide

protoplanet

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 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

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

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.

Across languages

Translations

23 source translations are retained for this English entry.

  • Catalan: protoplaneta — astronomical object
  • Chinese Mandarin: 原行星 (yuánxíngxīng) — astronomical object
  • Czech: protoplaneta — astronomical object
  • Finnish: protoplaneetta — astronomical object
  • French: protoplanète — astronomical object
  • German: Protoplanet — astronomical object
  • Hindi: आदिग्रह (ādigrah) — astronomical object
  • Ido: protoplaneto — astronomical object
  • Irish: prótapláinéad — astronomical object
  • Italian: protopianeta — astronomical object
  • Japanese: 原始惑星 — astronomical object
  • Kabuverdianu: protoplaneta — astronomical object
  • Kabuverdianu: protoplanita — astronomical object
  • Kabuverdianu: protoplaneta — astronomical object
  • Lithuanian: proplaneta — astronomical object
  • Norwegian: protoplanet — astronomical object
  • Polish: protoplaneta — astronomical object
  • Portuguese: protoplaneta — astronomical object
  • Romanian: protoplanetă — astronomical object
  • Russian: протоплане́та (protoplanéta) — astronomical object
  • Slovak: protoplanéta — astronomical object
  • Spanish: protoplaneta — astronomical object
  • Swedish: protoplanet — astronomical object