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Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.

An instrument designed to show the condition of the superficial portions of the eye.

Giving an image in correct or normal proportions; giving a flat field of view; as, an orthoscopic eyepiece.

Designating the form of silicic acid having the normal or highest number of hydroxyl groups.

Having the seeds straight, as in the fruits of some umbelliferous plants; -- opposed to coelospermous. Darwin.

A chiton, or loose, ungirded tunic, falling in straight folds.

A longitudinal rank, or row, of leaves along a stem.

Cutting at right angles. Orthotomic circle (Geom.), that circle which cuts three given circles at right angles.

Having two cleavages at right angles with one another.

The property of cutting at right angles.

Retaining the accent; not enclitic; -- said of certain indefinite pronouns and adverbs when used interrogatively, which, when not so used, are ordinarilly enclitic.

Having the axis of an ovule or seed straight from the hilum and chalaza to the orifice or the micropyle; atropous.

Having the longer axis vertical; -- said of erect stems. Encyc. Brit.

That variety of xylene in which the two methyl groups are in the ortho position; a colorless, liquid, combustible hydrocarbon resembling benzene.

A small house or building at a little distance from the main house; an outbuilding.

The branch of paleontology which treats of fossil birds.

Having both mandibles of equal length, the tips meeting, as in certain birds.

The state of a parent; the office or character of a parent.

ssues and fluids in infectious diseases, and supposed to be the cause of the disease; a pathogenic organism; a pathogenic bacterium; -- opposed to zymogene.

Pathogeny.