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A genus of Cephalopoda. The shell is called paper nautilus or paper sailor.

A variety of the gazelle (Antilope, or Gazella, dorcas), found in Arabia and adjacent countries. (b) A squirrel-like Australian marsupial, a species of Petaurus. (c) A beautiful Brazilian toucan Ramphastos ariel).

To deck or dress; to adorn with dress; to cloth to envelop; -- applied esp. to dress of a splendid kind. Pharaoh . . . arrayed him in vestures of fine linen. Gen. xli. In gelid caves with horrid gloom arrayed. Trumbull.

straining from further motion, etc.; stoppage; hindrance; restraint; as, an arrest of development. As the arrest of the air showeth. Bacon.

A genus of phyllopod Crustacea found in salt lakes and brines; the brine shrimp. See Brine shrimp.

A literary composition, forming an independent portion of a magazine, newspaper, or cyclopedia.

he whole mass of aëriform fluid surrounding the earth; -- applied also to the gaseous envelope of any celestial orb, or other body; as, the atmosphere of Mars.

of the nature of, or resembling, the atmosphere; as, atmospheric air; the atmospheric envelope of the earth.

gin and formation of all things. This philosophy was first broached by Leucippus, was developed by Democritus, and afterward improved by Epicurus, and hence is sometimes denominated the Epicurean philosophy. -- Atomic theory, or the Doctrine of definite proportions (Chem.), teaches that chemical combinations take plac…

A kind of chætopod larva in which no circles of cilia are developed.

Affected with atrophy, as a tissue or organ; arrested in development at a very early stage; rudimentary.

A broken gait of a horse, between an amble and a gallop; -- commonly called a Canterbury gallop.

naturalism of Rousseau, the sensationalism of Condillac, and the publication of the "Encyclopedia" by D'Alembert and Diderot. In Germany, Lessing, Mendelssohn, and Herder were representative thinkers, while the political doctrines of the leaders of the American Revolution and the speculations of Benjamin Franklin and T…

Poisoning caused by a virus that originates and develops in the organism itself.

A system of natural drainage developed by the constituent streams through headwater erosion.

Developed from an independent center of ossification. Owen. Autogenous soldering, the junction by fusion of the joining edges of metals without the intervention of solder.

ntral line of any design. Anticlinal axis (Geol.), a line or ridge from which the strata slope downward on the two opposite sides. -- Synclinal axis, a line from which the strata slope upward in opposite directions, so as to form a valley. -- Axis cylinder (Anat.), the neuraxis or essential, central substance of a ne…

A kind of handwriting in which the downward slope of the letters is from left to right.

Not advanced in civilization; undeveloped; as, the country or region is in a backward state.

A cephalopod of the extinct genus Baculites, found fossil in the Cretaceous rocks. It is like an uncoiled ammonite.