Where does “onlap” come from?

onlap (English) comes from English lap, from Middle English lappen, from Old English lapian, from Tagalog lapi, from Spanish lápiz, from Italian lapis, from Latin lapis, from Proto-Italic *lapets — stone.

onlap (English): The phenomenon of successively younger rock...

Definitions

  1. The phenomenon of successively younger rock...

Ancestry of “onlap”, step by step

onlap traces back through two separate lines of ancestry.

via English lap

StepLanguageWordMeaning
1EnglishlapThe loose part of a coat; the lower part of a...
2Middle Englishlappento wrap, fold
3Old Englishlapianto lick, lap up, suck
4Tagaloglapijoining or attaching a part to a whole; affix
5Spanishlápizpencil
6Italianlapispencil; sanguine
7Latinlapisa stone; a milestone; a boundary stone
8Proto-Italic*lapetsstone

via English on

StepLanguageWordMeaning
1EnglishonIn the state of being active, functioning or...
2Middle Englishonon, in; on; Alternative form of oon
3Old Englishonon, in, at, among; from
4Proto-West Germanicanaon
5Proto-Germanic*an
6Proto-Germanicanaon, at; on, onto; ana
7Proto-Indo-Europeanh₂en-on, onto
Every word from Proto-Italic *lapets