As adjectives the difference between tonsillar and paristhmic
is that tonsillar is of or pertaining to the tonsils while paristhmic is (obsolete) of or pertaining to the tonsils; tonsillar.
tonsillar
English
Adjective
(-)
Of or pertaining to the tonsils
paristhmic
English
Adjective
(-)
(obsolete) Of or pertaining to the tonsils; tonsillar