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The scarfskin or epidermis. See Skin.

Pertaining to the cuticle, or external coat of the skin; epidermal.

See Dermis.

rmation and separation of laminæ or layers; one of the methods by which the various blastodermic layers of the ovum are differentiated.

To corrupt or undermine in morals; to destroy or lessen the effect of moral principles on; to render corrupt or untrustworthy in morals, in discipline, in courage, spirit, etc.; to weaken in spirit or efficiency. The demoralizing example of profligate power and prosperous crime. Walsh. The vices of the nobility had dem…

tive, much used in anatomical terms, and signifying skin, integument, covering; as, blastoderm, ectoderm, etc.

The separation or shedding of the cuticle or epidermis in the form of flakes or scales; exfoliation, as of bones.

; extension; dissemination; circulation; dispersion. A diffusion of knowledge which has undermined superstition. Burke.

her, how great a lubber doth yet wear pearls. Robynson (More's Utopia). To dig down, to undermine and cause to fall by digging; as, to dig down a wall. -- To dig from, out of, out, or up, to get out or obtain by digging; as, to dig coal from or out of a mine; to dig out fossils; to dig up a tree. The preposition is of…

Alderman. [Obs.]

The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid. [Written also Echinidea, and Echinoida.]

The Echinodermata.

A genus of echinoderms, including the common edible sea urchin of Europe.

Relating to, or connected with, the two primitive germ layers, the ectoderm and ectoderm; as, the "ectental line" or line of juncture of the two layers in the segmentation of the ovum. C. S. Minot.

The outer layer of the blastoderm; the epiblast; the ectoderm.

To remove the epidermis of (a skin) with a concave knife, blunt in its middle part, -- as in making chamois leather.

hit with the elbow, as when one pushes by another. They [the Dutch] would elbow our own aldermen off the Royal Exchange. Macaulay. To elbow one's way, to force one's way by pushing with the elbows; as, to elbow one's way through a crowd.

tread. Elephantine epoch (Geol.), the epoch distinguished by the existence of large pachyderms. Mantell. -- Elephantine tortoise (Zoöl.), a huge land tortoise; esp., Testudo elephantina, from islands in the Indian Ocean; and T. elephantopus, from the Galapagos Islands.

A fold of the endoderm, which projects into the blood cavity of ascidians. See Tunicata.

The inner germ layer; endoderm. See Nucleolus.