Acrania: animals without skull (_cranium_).
Anthropogeny: the evolution (_genesis_) of man (_anthropos_).
Archi-: (in compounds) the first or typical—as, archi-cytula, archi-gastrula, etc.
Biogeny: the science of the genesis of life (_bios_).
Blast-: (in compounds) pertaining to the early embryo (_blastos_ = a bud); hence:— Blastoderm: skin (_derma_) or enclosing layer of the embryo. Blastosphere: the embryo in the hollow sphere stage. Blastula: same as preceding. Epiblast: the outer layer of the embryo (ectoderm). Hypoblast: the inner layer of the embryo (endoderm).
Branchial: pertaining to the gills (_branchia_).
Caryo-: (in compounds) pertaining to the nucleus (_caryon_); hence:— Caryokineses: the movement of the nucleus. Caryolysis: dissolution of the nucleus. Caryoplasm: the matter of the nucleus.
Chordaria and Chordonia: animals with a dorsal chord or back-bone.
Cœlom or Cœloma: the body-cavity in the embryo; hence:— Cœlenterata: animals without a body-cavity. Cœlomaria: animals with a body-cavity. Cœlomation: formation of the body-cavity.
Cyto-: (in compounds) pertaining to the cell (_cytos_); hence:— Cytoblast: the nucleus of the cell. Cytodes: cell-like bodies, imperfect cells. Cytoplasm: the matter of the body of the cell. Cytosoma: the body (_soma_) of the cell.
Cryptorchism: abnormal retention of the testicles in the body.
Dualism: the belief in the existence of two entirely distinct principles (such as matter and spirit).
Dysteleology: the science of those features in organisms which refute the “design-argument”.
Ectoderm: the outer (_ekto_) layer of the embryo.
Entoderm: the inner (_ento_) layer of the embryo.
Epigenesis: the theory of gradual development of organs in the embryo.
Epiphysis: the third or central eye in the early vertebrates.
Epithelia: tissues covering the surface of parts of the body (such as the mouth, etc.)
Gonochorism: separation of the male and female sexes.
Gonotomes: sections of the sexual glands.
Gynecomast: a male with the breasts (_masta_) of a woman (_gyne_).
Hepatic: pertaining to the liver (_hepar_).
Holoblastic: embryos in which the animal and vegetal cells divide equally (_holon_ = whole).
Hypermastism: the possession of more than the normal breasts (_masta_).