The quality or condition of being bisyllabic; the characteristic of having exactly two syllables.
From bisyllabic + -ism (suffix forming nouns denoting conditions or systems). Linguistic terminology from the 19th century.
Historical linguists use terms like 'bisyllabism' to track how languages change—Latin used to be full of two-syllable words, but Romance languages kept chipping away at them, turning trisyllables into bisyllables through phonetic erosion over centuries.
Complete word intelligence in one call. Free tier — 50 lookups/day.