Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
smile involvingcontraction of both thezygomatic major muscle (which raises the corners of the mouth) and theorbicularis oculi (which raises the cheeks and formscrow's feet around the eyes).
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
After the French physician Duchenne de Boulogne (1806-1875).
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Examples
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bilby commented on the word Duchenne smile
C'mon, smile!
May 19, 2014