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, c.c', so related to a point O on the line, that the product Oa.Oa' = Ob.Ob' = Oc.Oc' is constant. Sets of lines or surfaces possessing corresponding properties may be in involution.

essures corresponding to changes of temperature when the volume of the gas operated on is constant. -- I`so*chor"ic (#), a.

ar differences of composition; -- said specifically of groups or series which differ by a constant difference; as, ethane, ethylene, an acetylene, or their analogous compounds, form an isologous series.

in a diagram the relations of pressure and temperature in a gas, when the volume remains constant. -- Isometrical perspective. See under Perspective. -- Isometrical projection, a species of orthographic projection, in which but a single plane of projection is used. It is so named from the fact that the projections o…

showing, in a diagram, the relations of temperature and volume, when the elastic force is constant; -- called also isobars.

(in a diagram) (Geom.), the locus of all the points for which a specified function has a constant value. Newcomb.

To have a constant desire or teasing uneasiness; to long for; as, itching ears. "An itching palm." Shak.

is constant for an interval of time (t), the energy (H) in heat units equals i2Rt, R being resistance.

ly personage, a little above just stature. Bacon. Fire fitted with just materials casts a constant heat. Jer. Taylor. When all The war shall stand ranged in its just array. Addison. Their named alone would make a just volume. Burton.

The standard adopted by the Emperor Constantine after his conversion to Christianity. It is described as a pike bearing a silk banner hanging from a crosspiece, and surmounted by a golden crown. It bore a monogram of the first two letters (CHR) of the name of Christ in its Greek form. Later, the name was given to vario…

other than rise of temperature, as fusion, evaporation, or expansion, the quantity being constant for each particular body and for each species of change. -- Latent period. (a) (Med.) The regular time in which a disease is supposed to be existing without manifesting itself. (b) (Physiol.) One of the phases in a simpl…

In philosophy and physics: A rule of being, operation, or change, so certain and constant that it is conceived of as imposed by the will of God or by some controlling authority; as, the law of gravitation; the laws of motion; the law heredity; the laws of thought; the laws of cause and effect; law of self-preservation.…

To spend, as one's life; to pass; to maintain; to continue in, constantly or habitually; as, to live an idle or a useful life.

n the calculation of the fourth term of a proportion of which one of the terms is a given constant quantity, commonly one hour, while the other terms are expressed in minutes and seconds; -- not now used.

An accountant; under Constantine, an officer of the empire; a receiver of revenue; an administrator of a department.

idelity, especially as a wife to her husband, lovers to each other, and friend to friend; constant; faithful to a cause or a principle. Your true and loyal wife. Shak. Unhappy both, but loyaltheir loves. Dryden.

One of a certain religious sect, followers of Macedonius, Bishop of Constantinople, in the fourth century, who held that the Holy Ghost was a creature, like the angels, and a servant of the Father and the Son.

on the mannerist, which has been adopted on principle, and which can be sustained only by constant effort, is always offensive. Macaulay.

ton. Church militant, the Christian church on earth, which is supposed to be engaged in a constant warfare against its enemies, and is thus distinguished from the church triumphant, in heaven.

A timeserver; an inconstant person. Shak.