Where does “obtriangular” come from?

obtriangular (English) comes from English triangular, from Latin triangulare, from French triangulaire, from Latin triangularis, from Latin triangulus, from Latin Angulus, from Proto-Indo-European h₂engulos, from Proto-Indo-European h₂eng- — curve, bend.

obtriangular (English): triangular with the apex downwards

Definitions

  1. triangular with the apex downwards

Ancestry of “obtriangular”, step by step

obtriangular traces back through two separate lines of ancestry.

via English triangular

StepLanguageWordMeaning
1EnglishtriangularShaped like a triangle; Of, or pertaining to,...
2Latintriangularenominative neuter singular of triangulāris;...
3Frenchtriangulairetriangular; three-way race, struggle etc
4Latintriangularistriangular
5Latintriangulustriangular, three-cornered, three-sided;...
6LatinAngulusA city of the Vestini, situated on a hill near the Adriatic Sea, now the town of Città Sant'Angelo
7Proto-Indo-Europeanh₂engulosjoint?
8Proto-Indo-Europeanh₂eng-curve, bend

via English ob

StepLanguageWordMeaning
1Englishoba halfpenny; an objection; the obese gene
2Latinob-towards; against
3Latinobolusobolus (Greek coin)
4Ancient Greekὀβολόςobol, obolus, used at Athens as both a weight and...
5Ancient Greekὀβελόςa spit, rod; a horizontal line
6Ancient Greekβέλοςmissile, arrow, dart; weapon; something quickly...
7Proto-Indo-EuropeangʷélHos
8Proto-Indo-EuropeangʷelH-to throw, reach, pierce; to hit by throwing
Every word from Proto-Indo-European h₂eng-
obtriangular — Etymology, Origin & Word History | Etymology Explorer