Definition of subtriangular in US English:

subtriangular

adjective

Botany Zoology
  • Approaching the form of a triangle; somewhat triangular.

Origin

Mid 18th century; earliest use found in John Berkenhout (?1730–1791), physician and writer. From post-classical Latin subtriangularis from sub- + triangularis.

Pronunciation

subtriangular

/ˌsʌbtrʌɪˈaŋɡjʊlə/