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The class of the Coelenterata which includes the corals and sea anemones. The three principal groups or orders are Acyonaria, Actinaria, and Madreporaria.

A device, one form of which consists of a scratched deposit of silver on glass, used in connection with the receiving apparatus for reading wireless signals. The electric waves falling on this contrivance increase its resistance several times. The anticoherer can be used in conjunction with a telephone.…

n its appearance and physical properties, but in its chemical relations belonging to the class of nonmetallic substances. Atomic weight, 120. Symbol, Sb.

r standing. [Colloq.] All the men belonged exclusively to the mechanical and shopkeeping classes, and there was not a single banker or anybody in the list. Lond. Sat. Rev.

The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture.

two such foci; and it is by taking advantage of this fact that the best aplanatic object glasses of microscopes are constructed.

Common, as opposed to proper; denominative of a class.

After the manner of nouns appellative; in a manner to express whole classes or species; as, Hercules is sometimes used appellatively, that is, as a common name, to signify a strong man.

ea, spiders, centipeds, and even worms. These animals are now placed in several distinct classes and orders.

An artificial pond, or a globe or tank (usually with glass sides), in which living specimens of aquatic animals or plants are kept.

One of the classes of Arthropoda. See Illustration in Appendix.

A chief bishop; a church dignitary of the first class (often called a metropolitan or primate) who superintends the conduct of the suffragan bishops in his province, and also exercises episcopal authority in his own diocese.

division of an entablature, or that part which rests immediately on the column, esp. in classical architecture. See Column.

A lamp with a circular hollow wick and glass chimney which allow a current of air both inside and outside of the flame. Argand burner, a burner for an Argand lamp, or a gas burner in which the principle of that lamp is applied.

The nobles or chief persons in a state; a privileged class or patrician order; (in a popular use) those who are regarded as superior to the rest of the community, as in rank, fortune, or intellect.

One of the aristocracy or people of rank in a community; one of a ruling class; a noble.

rotected from the enemy's shot by iron or steel armor. There is no distinct and accepted classification distinguishing armored and protected cruisers from each other, except that the first have more or heavier armor than the second.

The system by which a country raises, classifies, arranges, and equips its armed land forces. The usual divisions are: (1) A regular or active army, in which soldiers serve continuously with the colors and live in barracks or cantonments when not in the field; (2) the reserves of this army, in which the soldiers, while…

ng- scented; odoriferous; as, aromatic balsam. Aromatic compound (Chem.), one of a large class of organic substances, as the oils of bitter almonds, wintergreen, and turpentine, the balsams, camphors, etc., many of which have an aromatic odor. They include many of the most important of the carbon compounds and may all…

nds for all ardent spirits. Arrack is often distilled from a fermented mixture of rice, molasses, and palm wine of the cocoanut tree or the date palm, etc.