RISORIAL
Source: 567
Ri‐so″ri‐al (?), a.[[L. ridere, risum, to laugh.]] Pertaining to, or producing, laughter; as, the risorial muscles.
Source: 567
Ri‐so″ri‐al (?), a.[[L. ridere, risum, to laugh.]] Pertaining to, or producing, laughter; as, the risorial muscles.