gastrulation

As a noun gastrulation

is (embryology|biology) the stage of embryo development at which a gastrula is formed from the blastula by the inward migration of cells.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between gastrulation and neuralation

is that gastrulation is (embryology|biology) the stage of embryo development at which a gastrula is formed from the blastula by the inward migration of cells while neuralation is the formation of the embryonic nervous system.

As nouns the difference between cleavage and gastrulation

is that cleavage is the act of cleaving or the state of being cleft while gastrulation is the stage of embryo development at which a gastrula is formed from the blastula by the inward migration of cells.

As nouns the difference between mesoderm and gastrulation

is that mesoderm is (label) one of the three tissue layers in the embryo of a metazoan animal through embryonic development, it will produce many internal organs of the adult, eg muscles, spine and circulatory system while gastrulation is (embryology|biology) the stage of embryo development at which a gastrula is formed from the blastula by the inward migration of cells.

As nouns the difference between gastulation and gastrulation

is that gastulation is while gastrulation is (embryology|biology) the stage of embryo development at which a gastrula is formed from the blastula by the inward migration of cells.

As a noun gastrulation is

(embryology|biology) the stage of embryo development at which a gastrula is formed from the blastula by the inward migration of cells.

As a noun gastrulation

is (embryology|biology) the stage of embryo development at which a gastrula is formed from the blastula by the inward migration of cells.

As an adjective perigastrulation is

(physiology) occurring around the time of gastrulation.

As nouns the difference between gastrulation and germband

is that gastrulation is the stage of embryo development at which a gastrula is formed from the blastula by the inward migration of cells while germband is the band of germ layers that forms on the ventral side of the embryo during gastrulation in insects.