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The reflux of tide water; the retiring tide; -- opposed to flood tide.

plates, and covered with movable spines. See Spatangoid, Clypeastroid. [Written also Echinidea, and Echinoida.]

A division of Annelida which includes the genus Echiurus and allies. They are often classed among the Gephyrea, and called the armed Gephyreans.

with fine down (taken from its own body) which is an article of commerce; -- called also eider duck. The American eider (S. Dresseri), the king eider (S. spectabilis), and the spectacled eider (Arctonetta Fischeri) are related species. Eider down. Etym: [Cf. Icel. æ\'ebardun, Sw. eiderdun, Dan. ederduun.] Down of the e…

To break or dash in pieces; to demolish; as, to elide the force of an argument. [Obs.] Hooker.

To ornament with needlework; as, to embroider a scarf. Thou shalt embroider the coat of fine linen. Ex. xxviii. 39.

One who embroiders.

Needlework used to enrich textile fabrics, leather, etc.; also, the art of embroidering.

That order of the Crinoidea which includes most of the living and many fossil forms, having jointed arms around the margin of the oral disk; -- also called Brachiata and Articulata. See Illusts. under Comatula and Crinoidea.

Having the anterior scutes extending around the tarsus on the inner side; -- said of certain birds.

Applied to the skin without friction; -- said of medicines.

To widen. [Obs.]

Serving to show forth, explain, or exhibit; -- applied by the Greeks to a kind of oratory, which, by full amplification, seeks to persuade.

An epidemic disease.

t the same time, a large number in a community; -- applied to a disease which, spreading widely, attacks many persons at the same time; as, an epidemic disease; an epidemic catarrh, fever, etc. See Endemic.

In an epidemic manner.

A treatise upon, or history of, epidemic diseases.

Connected with, or pertaining to, epidemiology.

A person skilled in epidemiology.

That branch of science which treats of epidemics.