Meanings
protoplanetary1
adjectiveprotoplanetary (not comparable)
alternative proto-planetary
- not comparableastronomyOf or pertaining to a protoplanet.
protoplanetary2
adjectiveprotoplanetary (not comparable)
alternative proto-planetary
- not comparableRelating to a stage in the life of a red giant star or its protoplanetary nebula during the star's final stages of life
Synonyms & antonyms
Also see
Origin
protoplanetary · adjective
From proto- + planetary and protoplanet + -ary.
Full word history & related roots →protoplanetary · adjective
From protoplanetary nebula, from proto- + planetary nebula.
Full word history & related roots →Translations
Finnish esiplanetaarinen
- esiplanetaarinenof or pertaining to a protoplanet
German protoplanetar, protoplanetarisch
- protoplanetarof or pertaining to a protoplanet
- protoplanetarischof or pertaining to a protoplanet
Hindi आदिग्रहीय
- आदिग्रहीय (ādigrahīya)of or pertaining to a protoplanet
Polish protoplanetarny
- protoplanetarnyof or pertaining to a protoplanet
Russian протопланетный
- протопланетный (protoplanetnyj)of or pertaining to a protoplanet
Spanish protoplanetario
- protoplanetarioof or pertaining to a protoplanet
Cite this entry
APA
protoplanetary. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/protoplanetary
MLA
“protoplanetary.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/protoplanetary. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “protoplanetary,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/protoplanetary.
Source: protoplanetary on Wiktionary, CC BY-SA 4.0.