The story
- Englishab-
- Proto-Indo-European*h₂ep-
- Proto-Italic*apeks
- Latinapex
- Englishapic-
- Englishapical
- English todayabapical
First known use, by meaning
- First attested in the mid 20ᵗʰ century. Of or pertaining to something at its lowest point; designating the part opposite to the apex.
Etymology from Wiktionary, CC BY-SA 4.0.