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Related to Euclid, or to the geometry of Euclid. Euclidian space (Geom.), the kind of space to which the axioms and definitions of Euclid, relative to straight lines and parallel lines, apply; -- called also flat space, and homaloidal space.

A group which includes the typical copepods and the lerneans.

Such a due mixture of qualities in bodies as constitutes health or soundness. Quincy.

Expecting a wish; supplicatory. [R.] Sacrifices . . . distinguished into expiatory, euctical, and eucharistical. Bp. Law.

A good angel. Southey.

That part of moral philosophy which treats of happiness; the science of happiness; -- contrasted with aretaics. J. Grote.

That system of ethics which defines and enforces moral obligation by its relation to happiness or personal well-being.

One who believes in eudemonism. I am too much of a eudæmonist; I hanker too much after a state of happiness both for myself and others. De Quincey.

Of or pertaining to eudemonism.

Eudemonistic.

A mineral of a brownish red color and vitreous luster, consisting chiefly of the silicates of iron, zirconia, and lime.

An instrument for the volumetric measurement of gases; -- so named because frequently used to determine the purity of the air.

Of or pertaining to a eudiometer; as, eudiometrical experiments or results.

The art or process of determining he constituents of a gaseous mixture by means of the eudiometer, or for ascertaining the purity of the air or the amount of oxygen in it.

The fundamental forms of organic life, that are composed of two equal and symmetrical halves. Syd. Soc. Lex.

A follower of Eudoxius, patriarch of Antioch and Constantinople in the 4th century, and a celebrated defender of the doctrines of Arius.

A group which includes the bony ganoids, as the gar pikes.

Applause. [Obs.] Hammond.

The quality or condition of having strong reproductive powers; generation with full fertility between different species or races, specif. between hybrids of the first generation.

A genus of mytraceous plants, mostly of tropical countries, and including several aromatic trees and shrubs, among which are the trees which produce allspice and cloves of commerce.