Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
Orthodox Judaism
Orthodoxy
orthodoxy
orthoepy
orthogenesis
orthogonal
orthogonal matrix
orthogonal projection
orthograde
orthographic
orthographic projection
orthography
orthomorphic
orthopaedic
orthopaedics
orthopedic
orthopedics
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

ortho-

ortho-


prefix 
Definition:
 
1. correct; correction, straightening
orthography
orthodontics

2. straight, upright, vertical
orthotropous

3. perpendicular
orthorhombic

4. fully hydrated or hydroxylated
orthophosphate

[Via French and Latin< Greek orthos "straight, right"]
Advertisement

© 2009 Microsoft