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An extensive group of rodents which includes the rats, mice, jerboas, and many allied forms.

hellgamite, and lacewing fly are examples. Formerly, the name was given to a much more extensive group, including the true Neuroptera and the Pseudoneuroptera.

An extensive genus of fossil ferns, of which species have been found from the Devonian to the Triassic formation.

ina, Clinton, and Niagara epoch. The rocks of the Niagara epoch, mostly limestones, are extensively distributed, and at Niagara Falls consist of about eighty feet of shale supporting a greater thickness of limestone, which is gradually undermined by the removal of the shale. See Chart of Geology.

ng swayed. Milton. The influence of reason in producing our passions is nothing near so extensive as is commonly believed. Burke. Nothing off (Naut.), an order to the steersman to keep the vessel close to the wind.

An extensive family of butterflies including the nymphs, the satyrs, the monarchs, the heliconias, and others; -- called also brush-footed butterflies.

A prefix signifying to, toward, before, against, reversely, etc.; also, as a simple intensive; as in oblige, to bind to; obstacle, something standing before; object, lit., to throw against; obovate, reversely, ovate. Ob- is commonly assimilated before c, f, g, and p, to oc-, of-, og-, and op-.

onsisting of small round grains, resembling the roe of a fish. It sometimes constitutes extensive beds, as in the European Jurassic. See the Chart of Geology.

thærus Nuttallii) found on the northwest coast of America. It is excellent food, and is extensively used by the Indians. -- Sea otter. (Zoöl.) See in the Vocabulary.

mmon wild pigeon of North America (Ectopistes migratorius), so called on account of its extensive migrations.

An extensive genus of fossil ferns; -- so named from the regular comblike arrangement of the leaflets.

An extensive division of ruminants, including the antelopes, deer, and cattle.

An extensive division of Coleoptera, including those that normally have five-jointed tarsi. It embraces about half of all the known species of the Coleoptera.

A prefix used to signify through, throughout, by, for, or as an intensive as perhaps, by hap or chance; perennial, that lasts throughout the year; perforce, through or by force; perfoliate, perforate; perspicuous, evident throughout or very evident; perplex, literally, to entangle very much.

An extensive tribe or suborder of fishes, including the true perches (Percidæ); the pondfishes (Centrarchidæ); the sciænoids (Sciænidæ); the sparoids (Sparidæ); the serranoids (Serranidæ), and some other related families.

A prefix used to signify around, by, near, over, beyond, or to give an intensive sense; as, perimeter, the measure around; perigee, point near the earth; periergy, work beyond what is needed; perispherical, quite spherical.

ell of the genus Littorina. The common European species (Littorina littorea), in Europe extensively used as food, has recently become naturalized abundantly on the American coast. See Littorina.

Pestering; vexatious; troublesome. Used also as an intensive. [Colloq. & Low, U.S.] Judd.

H3PO4, which is the most highly oxidized acid of phosphorus, and forms an important and extensive series of compounds, viz., the phosphates. -- Soluble phosphoric acid, Insoluble phosphoric acid (Agric. Chem.), phosphoric acid combined in acid salts, or in neutral or basic salts, which are respectively soluble and ins…

An extensive division of birds which includes the woodpeckers, toucans, trogons, hornbills, kingfishers, motmots, rollers, and goatsuckers. By some writers it is made to include also the cuckoos, swifts, and humming birds.