Where does “secondary planet” come from?

secondary planet (English) comes 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, from Proto-Indo-European per- — passed , crossed.

secondary planet (English): A moon of a planet

Definitions

  1. A moon of a planet

Ancestry of “secondary planet”, step by step

secondary planet traces back through two separate lines of ancestry.

via English planet

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

via English secondary

StepLanguageWordMeaning
1EnglishsecondaryNext in order to the first or primary; of second...
2Middle EnglishsecundarieSecondary; lesser in import, meaning or...
3Latinsecundāriussecond-class, second-rate, of inferior quality
4Latinsecundussecond, the ordinal number after prīmus and...
5LatinsequorI follow, come or go after
6Proto-Italicsekʷōrfollow, come/go after
7Proto-Indo-Europeansékʷetorto be following
8Proto-Indo-Europeansekʷ-to follow; to see; to say
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Ancient Greek -τής