ortho

Etymology
From

Noun

 * 1)  An isomer of a benzene derivative having two substituents adjacent on the ring.
 * 2)  A certain type of flat eyepiece.
 * 3)  An orthochromatic plate.
 * 4)  An orthophoto.
 * 5)  Orthopedics.
 * 1)  An orthochromatic plate.
 * 2)  An orthophoto.
 * 3)  Orthopedics.
 * 1)  Orthopedics.
 * 1)  Orthopedics.

Etymology
From.

Noun

 * 1)  , orthodontiste.