Antonyms of adj biconcave

1 sense of biconcave

Sense 1
biconcave, concavo-concave -- (concave on both sides)

INDIRECT (VIA concave) -> convex, bulging -- (curving or bulging outward)

Similarity of adj biconcave

1 sense of biconcave

Sense 1
biconcave, concavo-concave -- (concave on both sides)
       => concave (vs. convex) -- (curving inward)