Definition of geometriform in US English:

geometriform

adjective

Entomology
  • Having the form of a geometrid; resembling (that of) moths or caterpillars of the genus Geometra. Also: of or relating to a lepidopteran division Geometriformes comprising geometrids and related moths.

Origin

Mid 19th century; earliest use found in Henry Stainton (1822–1892), entomologist. From scientific Latin Geometra + -form.

Pronunciation

geometriform

/dʒɪəˈmɛtrɪfɔːm/