disyllable
noun
di·syl·la·ble ˈdī-ˌsi-lə-bəl 
(ˌ)dī-ˈsi-;
ˈdi-ˌsi- (ˌ)di(s)-ˈsi-
variants or less commonly dissyllable
: a linguistic form consisting of two syllables
disyllabic
ˌdī-sə-ˈla-bik
adjective ˌdi(s)-sə-
Word History
Etymology
partial translation of Middle French dissilabe, from Latin disyllabus having two syllables, from Greek disyllabos, from di- + syllabē syllable
First Known Use
1589, in the meaning defined above