| OD | a meter that shows mileage traversed |
|---|---|
| OD | dragonflies and damselflies |
| OD | large primitive predatory aquatic insect having two pairs of membranous wings |
| OD | an ache localized in or around a tooth |
| OD | sand sharks |
| OD | type and sole genus of Carchariidae: sand sharks |
| OD | shallow-water shark with sharp jagged teeth found on both sides of Atlantic |
| OD | the eruption through the gums of baby teeth |
| OD | toothed whales: dolphins |
| OD | any of numerous and diverse orchids of the genus Odontoglossum having racemes of few to many showy usually large flowers in many colors |
| OD | a toothlike process at the back of 2nd vertebra of the neck |
| OD | the branch of medicine dealing with the anatomy and development and diseases of the teeth |