geometrid

noun

geo·​me·​trid jē-ˈä-mə-trəd  ˌjē-ə-ˈme-trəd 

: any of a family (Geometridae) of usually medium-sized moths with large wings and larvae that are loopers

geometrid adjective

Word History

Etymology

ultimately from Greek geōmetrēs geometer, from geōmetrein

First Known Use

1876, in the meaning defined above