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Metabolism. [R.]

r cell protoplasm into simpler substances, which are fitted either for excretion or for some special purpose, as in the manufacture of the digestive ferments. Hence, metabolism may be either constructive (anabolism), or destructive (katabolism).

A product of metabolism; a substance produced by metabolic action, as urea.

To change by a metabolic process. See Metabolism.

Of or pertaining to the lobe of the carapace of crabs covering the posterior branchiæ.

Of or pertaining to the metacarpus. -- n.

That part of the skeleton of the hand or forefoot between the carpus and phalanges. In man it consists of five bones. See Illust. of Artiodactyla.

The point of intersection of a vertical line through the center of gravity of the fluid displaced by a floating body which is tipped through a small angle from its position of equilibrium, and the inclined line which was vertical through the center of gravity of the body when in equilibrium.

less liquid of an agreeable odor, C6H10O, obtained by distilling a mixture of sugar and lime; -- so called because formerly regarded as a polymeric modification of acetone.

A white, amorphous, insoluble substance regarded as a polymeric variety of chloral.

An error committed in chronology by placing an event after its real time.

The power og changing color at will by the expansion of special pigment cells, under nerve influence, as seen in many reptiles, fishes, etc. Cope.

Sulphide of mercury in isometric form and black in color.

A defect in pronouncing the letter m, or a too frequent use of it.

A polymeric modification of acrolein obtained by heating it with caustic potash. It is a crystalline substance having an aromatic odor.

A process projecting backward and downward from the acromion of the scapula of some mammals.

Discoidal by derivation; -- applied especially to the placenta of man and apes, because it is supposed to have been derived from a diffused placenta.

Of or pertaining to the two posterior gastric lobes of the carapace of crabs.

Measurement, especially of coal. De Foe.

extending from the one developed from the ovum to the final perfected individual. Hence, metagenesis involves the production of sexual individuals by nonsexual means, either directly or through intervening sexless generations. Opposed to monogenesis. See Alternate generation, under Generation.