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National flag. See under Flag. -- National guard, a body of militia, or a local military organization, as in Paris during the French Revolution, or as certain bodies of militia in other European countries and in the United States. -- National salute, a salute consisting of as many guns as there are States in the Unio…

Produced by natural organs, as those of the human throat, in distinction from instrumental music.

A crustacean larva having three pairs of locomotive organs (corresponding to the antennules, antennæ, and mandibles), a median eye, and little or no segmentation of the body.

e form, and the essential structure, of the bell of a jellyfish, and acting as a swimming organ.

A structure, part, or organ developed independently, that is, not derived from a similar structure, part, or organ, in a pre existing form.

A segmental tubule; one of the tubules of the primitive urinogenital organs; a segmental organ. See Illust. under Loeven's larva.

Of or pertaining to the kidneys or urinary organs; renal; as, a nephritic disease.

The movement caused in the sensory organs by external agents and transmitted to the muscles by the nerves. Dunglison.

A poisonous organic base (a ptomaine) formed in the decomposition of protagon with boiling baryta water, and in the putrefraction of proteid matter. It was for a long time considered identical with choline, a crystalline body originally obtained from bile. Chemically, however, choline is oxyethyl-trimethyl-ammonium hyd…

A cordlike organ composed of elastic fibers situated above the ventral nervous cord of annelids, like the earthworm. -- Neu`ro*cor"dal, a.

der of hexapod insects having two pairs of large, membranous, net-veined wings. The mouth organs are adapted for chewing. They feed upon other insects, and undergo a complete metamorphosis. The ant-lion, hellgamite, and lacewing fly are examples. Formerly, the name was given to a much more extensive group, including th…

Pertaining to, or forming, both nerves and sense organs.

Having no generative organs, or imperfectly developed ones; sexless. See Neuter, n., 3.

The complex, nitrogenous, organic base and dyestuff called also aniline black.

Of, pertaining to, or designating, a complex organic acid produced as a white crystalline substance by the action of nitrous acid on hydroquinone.

ortant compounds, as ammonia, nitric acid, the cyanides, etc, and is a constituent of all organized living tissues, animal or vegetable. Symbol N. Atomic weight 14. It was formerly regarded as a permanent noncondensible gas, but was liquefied in 1877 by Cailletet of Paris, and Pictet of Geneva.

erior extremity of the head containing the nostrils and olfactory cavities; the olfactory organ. See Nostril, and Olfactory organ under Olfactory.

A key of the piano or organ. The wakeful bird . . . tunes her nocturnal note. Milton. That note of revolt against the eighteenth century, which we detect in Goethe, was struck by Winckelmann. W. Pater.

A visceral mass, containing the stomach and other organs, in Tunicata and some mollusks.

In the broadest sense, a process or series of processes by which the living organism as a whole (or its component parts or organs) is maintained in its normal condition of life and growth.