per os
See also:
peros
and
peròs
Translingual
Etymology
From
Latin
per
(
“
through
”
)
+
ōs
(
“
mouth
”
)
.
Adverb
per
os
(
medicine
)
By
mouth
:
orally
.
Synonym:
PO
(
initialism
)
Antonyms:
NPO
,
nil per os
(
English
)