| ortho | a salt of phosphoric acid |
|---|---|
| ortho | an acid used in fertilizers and soaps: H3PO4 |
| ortho | a clear or yellow-colored monobasic acid (H3PO2) |
| ortho | form of dyspnea in which the person can breathe comfortably only when standing or sitting erect |
| ortho | a genus of Haemulidae |
| ortho | found from Long Island southward |
| ortho | heavier-than-air craft that is propelled by the flapping of wings |
| ortho | grasshoppers and locusts |
| ortho | any of various insects having leathery forewings and membranous hind wings and chewing mouthparts |
| ortho | any of various insects having leathery forewings and membranous hind wings and chewing mouthparts |
| ortho | any of various insects having leathery forewings and membranous hind wings and chewing mouthparts |
| ortho | of or relating to normal binocular vision |