Where does “protoplanetesimal” come from?

protoplanetesimal (English) comes from English planetesimal, 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.

protoplanetesimal (English): A very small protoplanet

Definitions

  1. A very small protoplanet

Ancestry of “protoplanetesimal”, step by step

protoplanetesimal traces back through two separate lines of ancestry.

via English planetesimal

StepLanguageWordMeaning
1EnglishplanetesimalAny of many small, solid astronomical objects...
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 proto

StepLanguageWordMeaning
1EnglishprotoPrototypical; preceding the proper beginning of...
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 pr̥tósEvery word from Proto-Indo-European per-Every word from Ancient Greek -τής