Search the Dictionary

or stretched; to expand. Plants, if they spread much, are seldom tall. Bacon. Govrnor Winthrop, and his associates at Charlestown, had for a church a large, spreading tree. B. Trumbull.

One of the facets of a compound eye of any arthropod.

The sternum of an arthropod somite.

The ventral part of any one of the somites of an arthropod.

One of the external openings of the tracheæ of insects, myriapods, and other arthropods; a spiracle.

The primitive mouth and esophagus of the embryo of annelids and arthropods.

esophageal ganglion (Zoöl.), a large special ganglion situated beneath the esophagus of arthropods, annelids, and some other invertebrates.

name has thus become, throughout all civilized countries, a synonym for probity and philanthropy. Macaulay. In popular literary acceptation, and as employed in special dictionaries of such words, synonyms are words sufficiently alike in general signification to be liable to be confounded, but yet so different in specia…

An extensive division of arthropods comprising all those which breathe by tracheæ, as distinguished from Crustacea, which breathe by means of branchiæ.

Any arthropod having tracheæ; one of the Tracheata.

An extinct order of arthropods comprising the trilobites.

Any one of numerous species of extinct arthropods belonging to the order Trilobita. Trilobites were very common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment.

An anthropoid ape, as the chimpanzee.

A West African anthropoid ape allied to the gorilla and chimpanzee, and by some considered only a variety of the chimpanzee. It is noted for building large, umbrella-shaped nests in trees. Called also tscheigo, tschiego, nschego, nscheigo.

One of the segments of the abdomen or post-abdomen of arthropods.

Any one of the abdominal segments of an arthropod.

The abdomen, or post-abdomen, of arthropods.

The sternal, or under piece, of any one of the uromeres of insects and other arthropods.

One of the transparent lenslike cells in the ocelli of certain arthropods.

A religious and philanthropic organization, similar to the Salvation Army, founded (1896) by Commander and Mrs. Ballington Booth.