Where does “protoplanetary” come from?

protoplanetary (English) comes from English planetary, from English planet, from Middle English planete, from Old French planete, from Latin planēta, from Ancient Greek πλανήτης, from Ancient Greek -τής, from Ancient Greek πεῖρα — passed , crossed.

protoplanetary (English): Of or pertaining to a protoplanet

Definitions

  1. Of or pertaining to a protoplanet

Ancestry of “protoplanetary”, step by step

protoplanetary traces back through two separate lines of ancestry.

via English planetary

StepLanguageWordMeaning
1EnglishplanetaryOf, or relating to planets, or the orbital motion...
2EnglishplanetEach of the seven major bodies which move...
3Middle EnglishplaneteEach of the seven celestial bodies which move...
4Old Frenchplaneteplanet
5Latinplanētaplanet (wandering star)
6Ancient Greekπλανήτηςwanderer, vagabond; planet; a fever that comes in...
7Ancient Greek-τήςAppended to verbs to form agent nouns
8Ancient Greekπεῖραtrial, experiment, attempt
9Proto-Indo-Europeanper-before, in front; first; to go through
10Proto-Indo-Europeanpr̥tóspassed , crossed

via English protoplanetary nebula

StepLanguageWordMeaning
1Englishprotoplanetary nebulaA stage in stellar evolution when a star starts to shed its outer layers before coming a true planetary nebula
2Englishproto-first; most recent common ancestor of; Relating...
3Ancient Greekπρωτο-first, primary
4Ancient Greekπρῶτοςfirst; earliest; foremost, most prominent
5Byzantine Greekνοτάριος
6Latinnotariusnotary; clerk, secretary; writer of shorthand;...
7Latin-āriuser
8Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)
Every word from Proto-Indo-European pr̥tós
protoplanetary — Etymology, Origin & Word History | Etymology Explorer