1. study of poetic meter; metrical system, system for creating verses. prosodyproso*dy , n. [l. prosodia the tone or accent of a syllable, gr. a song sung to, or with, an accompanying song, the accent accompanying the pronunciation; to + song, ode: cf. f. prosodie. see: ode.] that part of grammar which treats of the quantity of syllables, of accent, and of the laws of versification or metrical composition.prosody n