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an organic acid, C3O3N3H3, first obtained by heating uric acid or urea, and called pyrouric acid; afterwards obtained from isocyanic acid. It is a white crystalline substance, odorless and almost tasteless; -- called also tricarbimide.

A liquid organic base, C10H13.NH2, derived from cymene.

which is accidentally developed in one of the natural cavaties or in the substance of an organ.

Development of cells in animal and vegetable organisms. See Gemmation, Budding, Karyokinesis; also Cell development, under Cell.

The fertilized egg cell or parent cell, from the development of which the child or other organism is formed. Hæckel.

A fish; the dace. See Dace. Dart sac (Zoöl.), a sac connected with the reproductive organs of land snails, which contains a dart, or arrowlike structure.

ed of life; -- opposed to alive and living; reduced to that state of a being in which the organs of motion and life have irrevocably ceased to perform their functions; as, a dead tree; a dead man. "The queen, my lord, is dead." Shak. The crew, all except himself, were dead of hunger. Arbuthnot. Seek him with candle, br…

Incapacity of perceiving sounds; the state of the organs which prevents the impression which constitute hearing; want of the sense of hearing.

Diminishing the energy of organs; reducing excitement; as, a debilitant drug.

Tending deceive; delusive. [R.] As if those organs had deceptious functions. Shak.

The division of that which is morphologically one organ into two or more, as the division of an organ of a plant into a pair or cluster.

ed; not high or sharp; grave; heavy. "The deep thunder." Byron. The bass of heaven's deep organ. Milton.

To make more grave or low in tone; as, to deepen the tones of an organ. Deepens the murmur of the falling floods. Pope.

Having finished the course of life; dead; deceased. "Defunct organs." Shak. The boar, defunct, lay tripped up, near. Byron.

That condition of a tissue or an organ in which its vitality has become either diminished or perverted; a substitution of a lower for a higher form of structure; as, fatty degeneration of the liver.

Arrest of development, or degeneration of any organ, or of the body as a whole. Degradation of energy, or Dissipation of energy (Physics), the transformation of energy into some form in which it is less available for doing work.

Having the typical characters or organs in a partially developed condition, or lacking certain parts. Some families of plants are degraded dicotyledons. Dana.

Tasting; the appreciation of sapid qualities by the taste organs. Bp. Hall.

Concealment; seclusion. The mental organization of the novelist must be characterized, to speak craniologically, by an extraordinary development of the passion for delitescency. Sir W. Scott.

The disorganization or disarming of troops which have previously been mobilized or called into active service; the change from a war footing to a peace footing.