egg membranes defined in 1951 yearegg membranes - egg membranes;
egg membranes - Protective membranes surrounding the eggs of animals, especially well-developed in those of terrestrial species. Classified according to mode of origin: (1) Those secreted by ovum itself, vitelline membrane; (2) Those secreted by cells in the ovary, e.g. chorion, of insect eggs; (3) Those secreted by oviduct, e.g. white and shell of bird's egg, jelly of frog's spawn.
near egg membranes in Knolik
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