Where does “galactic habitable zone” come from?

galactic habitable zone (English) comes from English galactic, from French galactique, from Latin galacticus, from Ancient Greek γαλακτικός, from Ancient Greek -ικός, from Ancient Greek -κός, from Proto-Indo-European -ḱos — -y, -ic.

galactic habitable zone (English): the zone in a disk galaxy lying within the disk...

Definitions

  1. the zone in a disk galaxy lying within the disk...

Ancestry of “galactic habitable zone”, step by step

galactic habitable zone traces back through two separate lines of ancestry.

via English galactic

StepLanguageWordMeaning
1EnglishgalacticOf or pertaining to milk, or the secretion of...
2Frenchgalactiquegalactic; galactical
3Latingalacticusmilky
4Ancient Greekγαλακτικόςmilky; milky"
5Ancient Greek-ικόςof or pertaining to, in the manner of; -ic
6Ancient Greek-κόςforms adjectives with the sense of 'of or...
7Proto-Indo-European-ḱos-y, -ic

via English habitable zone

StepLanguageWordMeaning
1Englishhabitable zoneThe zone around a star where a planet could...
2EnglishhabitableSafe and comfortable, where humans, or other...
3Latinhabitabilishabitable; inhabited
4Latin-bilis-ble
5Proto-Italic-ðlisForms adjectives from verb stems indicating capacity or worth of being acted on
6Proto-Indo-European-dʰlis
7Proto-Indo-European-dʰlomAlternative form of *-trom; instrumental suffix;...
Every word from Proto-Indo-European -ḱosEvery word from Ancient Greek -ικόςEvery word from Ancient Greek -κός