Where does “semiquadrangular” come from?

semiquadrangular (English) comes from English quadrangular, from Latin quadrangularis, from Latin quadrangulum, from Latin quadrangulus, from Latin quattŭor, from Portuguese quarto, from Old Portuguese quarto, from Latin quārtus — and.

semiquadrangular (English): Having the shape of half a quadrangle

Definitions

  1. Having the shape of half a quadrangle

Ancestry of “semiquadrangular”, step by step

semiquadrangular traces back through two separate lines of ancestry.

via English quadrangular

StepLanguageWordMeaning
1EnglishquadrangularHaving the shape of a quadrangle; in the shape of...
2Latinquadrangularisquadrangular
3Latinquadrangulumquadrangle
4Latinquadrangulusquadrangular
5Latinquattŭorfour; 4
6Portuguesequartoordinal form of quatro; fourth; quarter; fourth;...
7Old Portuguesequartoquarter
8Latinquārtusfourth
9Proto-Indo-Europeankʷeturtos
10Proto-Indo-Europeankʷetwóresfour
11Proto-Indo-Europeankʷe-and

via English semi

StepLanguageWordMeaning
1EnglishsemiA semi-detached house; A semitrailer; a...
2Englishsemi-half; partial, incomplete; somewhat, rather,...
3Latinsēmi-half
4Proto-Indo-Europeansēmihalf; partially
Every word from Proto-Indo-European kʷe-