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Webster 1913 Edition

Subumbonal

Subˊum-bo′nal

,

Adj.

(Zool.)

Beneath or forward of the umbos of a bivalve shell.

Definition 2024

subumbonal

subumbonal

English

Adjective

subumbonal ‎(not comparable)

(zoology) Beneath or forward of the umbos of a bivalve shell.