Pertaining to a condition in which there are two primary germ layers, such as ectoderm and endoderm.
Examples of animals that developed from a diploblastic embryo are cnidarians and ctenophores.
Word origin: Greek diplóos, twofold + blastikós, budding.
Related forms: diploblasty (noun).
Compare: triploblastic, monoblastic.
See also: blastula, germ layer.