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ies of changes which animal and vegetable organisms undergo in their passage from the embryonic state to maturity, from a lower to a higher state of organization.

Having two modes of embryonic development.

A lack of common possessions, properties, or relationship. Community of embryonic structure reveals community of descent; but dissimilarity of embryonic development does not prove discommunity of descent. Darwin.

See under Embryonic.

Pertaining to an embryo, or the initial state of any organ; embryonic.

Embryonic.

Embryonic.

Embryonic; undeveloped. [R.]

An embryonic form having its origin in the invagination or pushing in of the wall of the planula or blastula (the blastosphere) on one side, thus giving rise to a double-walled sac, with one opening or mouth (the blastopore) which leads into the cavity (the archenteron) lined by the inner wall (the hypoblast). See Illu…

The process of invagination, in embryonic development, by which a gastrula is formed.

The primitive cell in certain embryonic forms. Balfour.

The sacred secretary or recorder sent by each state belonging to the Amphictyonic Council, along with the deputy or minister. Liddel & Scott.

omoplasy to denote any superinduced correspondence of position and structure in parts embryonically distinct (other writers using the term homoplasmy). Thus, there is homogeny between the fore limb of a mammal and the wing of a bird; but the right and left ventricles of the heart in both are only in homoplasy with each…

Developing, in the case of multicellular organisms, from the same embryonic systems into which the secondary unit (gastrula or plant enbryo) differentiates.

hose that are strong on both sides. Bacon. Indifferent tissue (Anat.), the primitive, embryonic, undifferentiated tissue, before conversion into connective, muscular, nervous, or other definite tissue.

rt of a lady of the manor. -- Lady crab (Zoöl.), a handsomely spotted swimming crab (Platyonichus ocellatus) very common on the sandy shores of the Atlantic coast of the United States. -- Lady fern. (Bot.) See Female fern, under Female, and Illust. of Fern. -- Lady in waiting, a lady of the queen's household, appoin…

The middle one of the three pairs of embryonic renal organs developed in most vertebrates; the Wolffian body.

The most posterior of the three pairs of embryonic renal organs developed in many vertebrates.

pertaining to, or discovered by, Johannes Müller. Müllerian ducts (Anat.), a pair of embryonic ducts which give rise to the genital passages in the female, but disappear in the male. -- Müllerian fibers (Anat.), the sustentacular or connective-tissue fibers which form the framework of the retina.

to become a part of the muscular system; -- applied to structural elements in certain embryonic forms.