WordReference Random House Unabridged Dictionary of American English © 2025
bi•o•stra•tig•ra•phy
(bī′ō strə tig′rə fē),USA pronunciation n.
bi•o•strat•i•graph•ic
(bī′ō strat′i graf′ik),USA pronunciation adj.
- Paleontology, Geologya branch of geology dealing with the differentiation of sedimentary rock units on the basis of the fossils they contain.
- bio- + stratigraphy