germ layer

noun

one of the three primary embryonic cell layers.
Compare ectoderm, endoderm, mesoderm.

Origin of germ layer

First recorded in 1875–80

Words nearby germ layer

geriatrician, geriatrics, gerlachovka, germ, germ cell, germ layer, germ line, germ membrane, germ plasm, germ theory, germ tube

Example sentences from the Web for germ layer

British Dictionary definitions for germ layer

germ layer

noun

embryol any of the three layers of cells formed during gastrulation See ectoderm, mesoderm, endoderm

Medical definitions for germ layer

germ layer

n.

Any of the three primary cellular layers, the ectoderm, endoderm, or mesoderm, into which most animal embryos differentiate and from which the organs and tissues of the body develop.

Scientific definitions for germ layer

germ layer

Any of three cellular layers, the ectoderm, endoderm, or mesoderm, into which most animal embryos differentiate in the gastrula stage and from which the organs and tissues of the body develop through further differentiation.