Adjective
bimoraic (not comparable)
(phonology, of a syllable) Having two morae, i.e. being composed of either two short vowels, or one long vowel, or a diphthong.
Synonym: dimoraic
Bimoraic syllables are now written with two letters, as in Japanese: diphthongs are written with the help of V or hV glyphs, and the nasal coda is written with the glyph for ŋ, which can form a syllable of its own in Vai. Source: Internet