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2. The part of grammar which treats of the
letters, and of the art of spelling words correctly.

3. A drawing in correct projection,
especially an elevation or a vertical section.

Or*thol"o*gy (?), n. [Gr. &?;;
'orqo`s right + &?; speech, description: cf. F.
orthologie.] The right description of things. [R.]
Fotherby.

Or`tho*met"ric (?), a. [See
Orthometry.] (Crystallog.) Having the axes at
right angles to one another; -- said of crystals or crystalline
forms.

Or*thom"e*try (?), n. [Ortho- +
-metry.] The art or practice of constructing verses
correctly; the laws of correct versification.

Or`tho*mor"phic (?), a. [Ortho-
+ morphic.] (Geom.) 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.

{ Or`tho*ped"ic (?), Or`tho*ped"ic*al (?), }
a.


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