- (of an igneous rock) split into thin, flat sheets, often resembling strata, as a result of uneven cooling.
- a combining form meaning “flat,” “broad,” used in the formation of compound words: platyhelminth.
- of, relating to, or designating rocks the constituents of which occur in flaky layers
- any of various small brightly coloured freshwater cyprinodont fishes of the Central American genus Xiphophorus, esp X. maculatus
- indicating something flat