[ec.to.derm] n [ISV] (1861) 1: the outer cellular membrane of a diploblastic animal (as a jellyfish)
2. a: the outermost of the three primary germ layers of an embryo b: a tissue (as neural tissue) derived from this germ layer -- ec.to.der.mal adj
[ec.to.derm] n [ISV] (1861) 1: the outer cellular membrane of a diploblastic animal (as a jellyfish)
2. a: the outermost of the three primary germ layers of an embryo b: a tissue (as neural tissue) derived from this germ layer -- ec.to.der.mal adj
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012