Pal"li*al (?), a. [L. pallium a mantle. See Pall.] Zool.

Of or pretaining to a mantle, especially to the mantle of mollusks; produced by the mantle; as, the pallial line, or impression, which marks the attachment of the mantle on the inner surface of a bivalve shell. See Illust. of Bivalve.

Pallial chamber Zool., the cavity inclosed by the mantle. -- Pallial sinus Zool., an inward bending of the pallial line, near the posterior end of certain bivalve shells, to receive the siphon. See Illust. of Bivalve.

 

© Webster 1913.

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