protoplanetary

Fetched 2026-11-02 (live).

Datamuse reports no synonyms or antonyms for this word.

Adjective

1. Of or pertaining to a protoplanet.

Adjective

1. Relating to a stage in the life of a red giant star or its protoplanetary nebula during the star's final stages of life

Source: Wiktionary · CC BY-SA 3.0 (Wiktionary) · cached copy, not a rewrite.