Malacostomous
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malacostomous — malacostomous, a. (mæləˈkɒstəməs) [f. mod.L. malacostom us (Ray s Willughby 1686; f. Gr. µαλακό ς soft + στόµ α mouth) + ous.] Of fishes: Having a soft mouth (i.e. toothless jaws); leather mouthed. in Chambers Cycl. Supp. in Ash; and in mod.… … Useful english dictionary