The Collaborative International Dictionary of English v.0.48:
Pacinian \Pa*cin"i*an\, a. (Anat.)
Of, pertaining to, or discovered by, Filippo Pacini
(1812-1883), an Italian physician of the 19th century.
Pacinian corpuscles, small oval bodies terminating some of
the minute branches of the sensory nerves in the skin of
the fingers, mesentery, integument and other parts of the
body; the corpuscula lamellosa; called also Vater's
corpuscles and Vater-Pacini corpuscles. They are
sensitive to pressure, and supposed to be tactile organs.
[1913 Webster +PJC]