noun
1. : an often conspicuous inward bend in the posterior part of the pallial line of a bivalve mollusk
2. : any of the branching channels through which fluids circulate in the mantle of a brachiopod
noun
1. : an often conspicuous inward bend in the posterior part of the pallial line of a bivalve mollusk
2. : any of the branching channels through which fluids circulate in the mantle of a brachiopod
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012