Where does “rectilineal” come from?

rectilineal (English) comes from English lineal, from Old French lineal, from Latin līneālis, from Latin līnea, from Latin līnum, from Proto-Italic līnom, from Proto-Indo-European līnom — flax.

rectilineal (English): Alternative form of rectilinear

Definitions

  1. Alternative form of rectilinear

Ancestry of “rectilineal”, step by step

rectilineal traces back through two separate lines of ancestry.

via English lineal

StepLanguageWordMeaning
1EnglishlinealOf a family relationship that includes mothers,...
2Old Frenchlineal
3Latinlīneālisconsisting of lines, linear, lineal
4LatinlīneaA linen thread
5Latinlīnumflax
6Proto-Italiclīnom
7Proto-Indo-Europeanlīnomflax

via English recti

StepLanguageWordMeaning
1Englishrectiplural of rectus

Words derived from “rectilineal

Every word from Proto-Indo-European līnomEvery word from Proto-Italic līnomEvery word from Latin līnum