As adjectives the difference between synonymous and synonymic
is that synonymous is having a similar meaning while synonymic is of, relating to, or being a synonym.
synonymous
English
Adjective
(-)
having a similar meaning
of, or being a synonym
(genetics, of a SNP) Such that both its forms yield the same sequenced protein.
Antonyms
* antonymous
* nonsynonymous
* (genetics) nonsynonymous
Derived terms
* synonym
* synonymity
synonymic
English
Adjective
(-)
of, relating to, or being a synonym
Synonyms
*synonymical