Duchenne smile

English

A Duchenne smile

Etymology

Named after the French physician Guillaume Duchenne de Boulogne (1806–1875) who identified it.

Noun

Duchenne smile (plural Duchenne smiles)

1. A smile involving contraction of both the zygomatic major muscle (which raises the corners of the mouth) and the orbicularis oculi (which raises the cheeks and forms crow's feet around the eyes).

   Coordinate terms: Botox smile, Pan Am smile