| orth | any of various insects having leathery forewings and membranous hind wings and chewing mouthparts |
|---|---|
| orth | of or relating to normal binocular vision |
| orth | treatment of defects of binocular vision (such as strabismus and amblyopia) by nonsurgical measures (especially by exercises to strengthen the eye muscles) |
| orth | a specialist in orthoptics |
| orth | an ophthalmoscope with a layer of water to neutralize the refraction of the cornea |
| orth | pertaining to an upright standing posture |
| orth | low blood pressure occurring in some people when they stand up |
| orth | tailorbirds |
| orth | tropical Asian warbler that stitches leaves together to form and conceal its nest |
| orth | (of a plant ovule) completely straight with the micropyle at the apex |
| orth | a completely straight ovule with the micropyle at the apex |