English
antibubble
From anti- + bubble: it is the opposite of a gas bubble, which is a sphere of gas surrounded by a liquid.
Proto-Indo-European *h₂ent- ‘forehead’
Proto-Indo-European *h₂énts ‘forehead’
Proto-Indo-European *h₂énti ‘opposite’
Ancient Greek ᾰ̓ντῐ́ ‘over against, opposite’
English anti-
Today it means
noun A droplet of liquid surrounded by a thin film of gas, formed when liquid drops or flows turbulently into the same or another liquid.
Language periods are conventional ranges, not dates for this word.
Etymograph / antibubble