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ich has for its object the analytical investigation of the relations and properties of geometrical magnitudes. -- Descriptive geometry, that part of geometry which treats of the graphic solution of all problems involving three dimensions. -- Elementary geometry, that part of geometry which treats of the simple proper…

Any one of a large class of sugars, isometric with glucose proper, and including levulose, galactose, etc.

crease or decrease of a variable magnitude, or the curve which represents it; as, a thermometric gradient. Gradient post, a post or stake indicating by its height or by marks on it the grade of a railroad, highway, or embankment, etc., at that spot.

The unit of weight in the metric system. It was intended to be exactly, and is very nearly, equivalent to the weight in a vacuum of one cubic centimeter of pure water at its maximum density. It is equal to 15.432 grains. See Grain, n., 4. Gram degree, or Gramme degree (Physics), a unit of heat, being the amount of heat…

Adapted to each other; having parts proportioned to each other; symmetrical. God hath made the intellectual world harmonious and beautiful without us. Locke.

A blue isometric mineral, characteristic of some volcani

A metrical line of eleven syllables. J. Warton.

Any one of several isometric hydrocarbons, C7H16, of the paraffin series (nine are possible, four are known); -- so called because the molecule has seven carbon atoms. Specifically, a colorless liquid, found as a constituent of petroleum, in the tar oil of cannel coal, etc.

Having the spines of the dorsal fin unsymmetrical, or thickened alternately on the right and left sides.

Having the ganglia of the nervous system unsymmetrically arranged; -- said of certain invertebrate animals.

er of fishes, comprising the flounders, halibut, sole, etc., having the body and head asymmetrical, with both eyes on one side. Called also Heterosomata, Heterosomi.

Having six metrical feet, especially dactyls and spondees. Holland.

Having the dorsal fin spines symmetrical, and in the same line; -- said of certain fishes.

Having the tail nearly or quite symmetrical, the vertebral column terminating near its base; -- opposed to heterocercal.

Having the ganglia of the nervous system symmetrically arranged, as in certain invertebrates; -- opposed to heterogangliate.

n external characters, while widely different in fundamental structure; resemblance in geometric ground form. See Homophyly, Promorphology.

promorphology, pertaining to or exhibiting that kind of organic form, in which the stereometric ground form is a pyramid, with similar poles. See Promorphology.

An instrument for measuring heights by observation of barometric pressure; esp., one for determining heights by ascertaining the boiling point of water. It consists of a vessel for water, with a lamp for heating it, and an inclosed thermometer for showing the temperature of ebullition.

ntal section of a building or other object, showing its true dimensions according to a geometric scale; a ground plan; a map; also, the art of making such plans.

the focus of a lens or mirror, by rays of light from the several points of the object symmetrically refracted or reflected to corresponding points in such focus; this may be received on a screen, a photographic plate, or the retina of the eye, and viewed directly by the eye, or with an eyeglass, as in the telescope an…