meaning of ortho
1. A combining form signifying straight, right, upright, correct, regular; as, orthodromy, orthodiagonal, orthodox, orthographic.
2. A combining form (also used adjectively)
3. The one of several acids of the same element (as the phosphoric acids), which actually occurs with the greatest number of hydroxyl groups; as, orthophosphoric acid. Cf. Normal.
4. Connection with, or affinity to, one variety of isomerism, characteristic of the benzene compounds; -- contrasted with meta- or para-; as, the ortho position; hence, designating any substance showing such isomerism; as, an ortho compound.
Related Words
ortho- | orthoboric acid | orthocarbonic | orthocartan | orthocenter | orthoceras | orthoceratite | orthochorea | orthochromatic film | orthoclase | orthoclastic | orthodiagonal | orthodome | orthodontia | orthodontic | orthodontic treatment | orthodontics | orthodontist | orthodonture | orthodox | orthodox catholic church | orthodox church | orthodox jew | orthodox judaism | orthodox sleep | orthodoxal | orthodoxality | orthodoxally | orthodoxastical | orthodoxical |
