isocolon
[ ahy-suh-koh-luh n ]
/ ˈaɪ səˌkoʊ lən /
noun, plural i·so·co·la [ahy-suh-koh-luh] /ˈaɪ səˌkoʊ lə/. Rhetoric.
a figure of speech or sentence having a parallel structure formed by the use of two or more clauses, or cola, of similar length, as “The bigger they are, the harder they fall.”