"Volva" is a word in ENGLISH

Applied to sexual zooids of hydroids, that have a saclike form and do not become free; -- opposed to phanerocodonic.

Any sac or saclike cavity; especially, one of the synovial sacs, or small spaces, often lined with synovial membrane, interposed …

A form assumed by Protozoa in which they become saclike and quiescent. It generally precedes the production of germs. See …

The larval form of a tapeworm, having the head and neck of a tapeworm attached to a saclike body filled …

A saclike involucre which incloses the young fruit in most hepatic mosses. See Illust. of Hepatica.

A suborder of Turbellaria including those that have a simple cylindrical, or saclike, stomach, without an intestine.

A division of Pectostraca including saclike parasites of Crustacea. They adhere by rootlike extensions of the head. See Illusration in …

One of the saclike organs from which the setae of annelids arise.