What is one of the dilatations of the body wall of Bryozoa in which the ova sometimes undegro the first stages of their development. See Illust. of Chilostoma called?

ovicell — One of the dilatations of the body wall of Bryozoa in which the ova sometimes undegro the first stages of their development. See Illust. of Chilostoma. (Webster's 1913.)

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