| osmosis |
the passage or diffusion of a liquid through a semipermeable membrane until the concentration is the same on both sides of the membrane, or the tendency of a liquid to diffuse in such a way. [2 definitions] |
| osmotic pressure |
the pressure created by a solvent in passing through a semipermeable membrane. (See osmosis.) |
| osprey |
a large, fish-catching hawk with a dark back and white underside; fish hawk. |
| ossa |
pl. of os1. |
| osseous |
of the substance of, containing, or similar to bone; bony. |
| Ossian |
in Gaelic legend, a hero and poet of the third century. |
| ossicle |
a small bone, esp. one of the three in the tympanic cavity of the ear. |
| ossify |
to make into or like bone. [4 definitions] |
| osso buco |
an Italian dish of veal shanks braised in white wine with vegetables and garlic. |
| osteal |
osseous; bony. [2 definitions] |
| osteitis |
inflammation of a bone or bony tissue. |
| ostensible |
apparent or stated, as opposed to real or true. |
| ostensive |
clearly or directly shown, expressed, or demonstrated. [2 definitions] |
| ostentation |
a showy display to impress others. |
| ostentatious |
done or designed with the intention of impressing others and consequently overly showy or grandiose; pretentious. |
| osteo- |
bone. |
| osteoarthritis |
the most common form of arthritis, resulting from wear and tear on joints and usually occurring after middle age. |
| osteoblast |
a cell that develops into bone, as during healing. |
| osteology |
the study of the skeletal system. |
| osteoma |
a nonmalignant tumor of bony tissue. |
| osteomalacia |
softening of the bones caused by vitamin and mineral deficiencies, occurring esp. in pregnant women. |