Early 20th century; earliest use found in Isaac Bayley Balfour (1853–1922), botanist. Probably from German plagiotrop + -ous. Compare French plagiotrope.
Definition of plagiotropous in US English:
plagiotropous
adjective
Botany rare
= plagiotropic.
Origin
Early 20th century; earliest use found in Isaac Bayley Balfour (1853–1922), botanist. Probably from German plagiotrop + -ous. Compare French plagiotrope.