Where does “moon pool” come from?

moon pool (English) comes from English Moon, from Middle English Mone, from Old English mān, from Sanskrit महादेव, from Sanskrit महा, from Proto-Indo-Aryan maźʰā́, from Proto-Indo-Iranian maȷ́ʰā́, from Proto-Indo-European méǵh₂s — big, great.

moon pool (English): An opening in the base of the hull of a vessel (especially a marine drilling platform), which is used for lowering equipment into the sea below

Definitions

  1. An opening in the base of the hull of a vessel (especially a marine drilling platform), which is used for lowering equipment into the sea below

Ancestry of “moon pool”, step by step

moon pool traces back through two separate lines of ancestry.

via English Moon

StepLanguageWordMeaning
1EnglishMoonThe Earth's moon; the sole natural satellite of the Earth, represented in astronomy and astrology by ☾
2Middle EnglishMoneA lamentation; a sorrowful moan or expression
3Old Englishmānbad, criminal, false; shameful act; crime;...
4Sanskritमहादेवthe "great God"
5Sanskritमहाcombining form of महत्; buffalo; great, large,...
6Proto-Indo-Aryanmaźʰā́
7Proto-Indo-Iranianmaȷ́ʰā́big, great
8Proto-Indo-Europeanméǵh₂sbig, great

via English Pool

StepLanguageWordMeaning
1EnglishPoolOS grid ref SW6641
2Middle Englishpool
3Old Englishpōlpool
4Proto-West Germanic*pōl
5Proto-Germanicpōlazpool
6Proto-Indo-Europeanbale-bog, marsh
7Yorubailéhome; house
Every word from Proto-Indo-European méǵh₂sEvery word from Proto-Indo-Iranian maȷ́ʰā́Every word from Proto-Indo-Aryan maźʰā́