risorius

About 0.01 uses per million words.

Meaning

1. noun A narrow band of facial muscle arising from the fascia over the masseter and inserting into the tissues at the corner of the mouth, which it draws laterally, as is used when smiling.

Similar words

zygomaticus major triangularis muscle levator anguli oris zygomaticus minor procerus abducens labiorum mentalis buccinator distortor oris temporalis

Often followed by

muscle and santorini muscles is of depressor