Pacinian \Pa*cin"i*an\, a. (Anat.) Of, pertaining to, or discovered by, Filippo Pacini, an Italian physician of the 19th century.

Pacinian corpuscles, small oval bodies terminating some of the minute branches of the sensory nerves in the integument and other parts of the body. They are supposed to be tactile organs.

Source: Webster's Revised Unabridged Dictionary (1913)