parisyllabic
/ˌparɪsɪˈlabɪk/Latin Grammar and Ancient Greek Grammar
adjective
Of a Greek or Latin noun: having the same number of syllables in all cases of the singular.
Origin
Mid 17th century; earliest use found in Thomas Blount (1618–1679), antiquary and lexicographer. From classical Latin pari-, alternative stem of pār equal + syllaba syllable + -ic. Compare later syllabic noun. Compare post-classical Latin parisyllabice, adverb, French parisyllabique.