2015-05-04

Monday word: risible

risible (rĭz′ə-bəl), adj.

1. having a tendency to laugh; disposed to laugh
2. arousing or provoking laughter; funny
3. associated with, relating to, or used in laughter (risible muscles, for example)

Etymology:  mid 1500s, Latin, from ridere, to laugh.

As far as I'm aware, the term "risible muscles" isn't a medical term for any particular muscle group; it's just an informal term for the muscles used in laughing.