See Also: risorius(medicine)
risorius(dictionary)
musculus risorius(medicine)

risorius (iou)



risorius noun. E19.
[mod. Latin (sc. musculus) risorius, from Latin risor laugher + -ius adjectival suffix.]
Anatomy. A muscle of facial expression running from the corner of the mouth, variable in form and absent in some individuals. Also risorius muscle.