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The art of uttering words corectly; a correct pronunciation of words; also, mode of pronunciation.

Direct fertilization in plants, as when the pollen fertilizing the ovules comes from the stamens of the same blossom; -- opposed to heterogamy.

Orthognathous.

The quality or state of being orthognathous. Huxley.

Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; -- opposed to Ant: prognathous. See Gnathic index, under Gnathic.

A rectangular figure.

Right-angled; rectangular; as, an orthogonal intersection of one curve with another. Orthogonal projection. See under Orthographic.

Perpendicularly; at right angles; as, a curve cuts a set of curves orthogonally.

An orthographic projection, sometimes partly in section, esp. of a building.

One versed in orthography; one who spells words correctly.

Of or pertaining to orthography, or right spelling; also, correct in spelling; as, orthographical rules; the letter was orthographic.

In an orthographical manner:

One who spells words correctly; an orthographer.

To spell correctly or according to usage; to correct in regard to spelling. In the coalesced into ith, which modern reaction has orthographized to i' th'. Earle.

The art or practice of writing words with the proper letters, according to standard usage; conventionally correct spelling; also, mode of spelling; as, his orthography is vicious. When spelling no longer follows the pronunciation, but is hardened into orthography. Earle.

The right description of things. [R.] Fotherby.

Having the axes at right angles to one another; -- said of crystals or crystalline forms.

The art or practice of constructing verses correctly; the laws of correct versification.

Having the right form. Orthomorphic projection, a projection in which the angles in the figure to be projected are equal to the corresponding angles in the projected figure.

Pertaining to, or employed in, orthopedy; relating to the prevention or cure of deformities of children, or, in general, of the human body at any age; as, orthopedic surgery; an orthopedic hospital.