Definition of opisthoglyphous in US English:

opisthoglyphous

adjective

Zoology
  • Of, relating to, or designating a colubrid snake having the rear one or two pairs of teeth in the upper jaw modified as fangs, with grooves to conduct the venom; back-fanged.

Origin

Late 19th century; earliest use found in The Athenaeum. Either from French opisthoglyphe opisthoglyph + -ous, or from scientific Latin Opisthoglypha, former group name + -ous.

Pronunciation

opisthoglyphous

/əˌpɪsθəˈɡlɪfəs/