Antonyms of adj single-shelled

1 sense of single-shelled

Sense 1
single-shelled -- (univalve)

INDIRECT (VIA univalve) -> bivalve, bivalved -- (used of mollusks having two shells (as clams etc.))

Similarity of adj single-shelled

1 sense of single-shelled

Sense 1
single-shelled -- (univalve)
       => univalve (vs. bivalve) -- (used of mollusks, especially gastropods, as snails etc.)