As adjectives the difference between peroral and paroral
is that peroral is (medicine) by way of the mouth while paroral is in the region of the mouth (of a ciliate).
peroral
English
Adjective
(-)
(medicine) By way of the mouth.
----
paroral
English
Adjective
(-)
In the region of the mouth (of a ciliate).
Derived terms
* paroral membrane