WordReference Random House Learner's Dictionary of American English © 2025
bi•coast•al /baɪˈkoʊstəl/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2025- occurring or existing on two coasts, esp. on both the E and W coasts of the U.S.
bi•coast•al
(bī kōs′tl),USA pronunciation adj.
bi•coast′al•ism, n.
- occurring or existing on two coasts, or on both the east and west coasts of the U.S.:a bicoastal firm with offices in San Francisco and New York.
- bi-1 + coastal