oxygen-starved |
of a living organism, deprived of an adequate oxygen supply. |
oxygen tent |
a transparent, tentlike enclosure that is fitted around the head and shoulders of a bedridden patient to form a chamber into which oxygen can be released. |
oxyhydrogen |
of or pertaining to a mixture of oxygen and hydrogen. [2 definitions] |
oxymoron |
a figure of speech in which an apparent contradiction makes or highlights a point, as in the phrase "a frozen flame". |
oxytocin |
a hormone produced by the pituitary gland that increases contractions of the uterus and stimulates milk production. |
oyez |
hear ye! attention! (usu. called out three times by a court or public official to command silence before an official proclamation is made). |
oyster |
any of various edible mollusks found chiefly in shallow water and characterized by a lumpy, irregular bi-valved shell, esp. the pearl oyster. [3 definitions] |
oyster bed |
a place on the ocean floor where oysters naturally breed or one that is prepared for their cultivation. |
oystercatcher |
any of several black and white shore birds having strong, reddish beaks with which they open and feed on bivalve mollusks such as oysters. |
oyster crab |
a small crab that lives as a commensal inside the gill cavities of living oysters and clams. |
oyster cracker |
a small round soda cracker, usu. eaten with oysters, stews, or soups. |
oyster plant |
see "salsify." |
oysters Rockefeller |
broiled oysters served on the half shell topped with spinach, bacon, seasonings, and cream sauce or butter. |
oz. |
abbreviation of "ounce," or "ounces," a unit of weight equal to one sixteenth of a pound or 28.350 grams in the avoirdupois weight system, and equal to one twelfth of a pound or 31.1051 grams in the apothecaries' weight and the troy weight systems. |
ozone |
oxygen in the form of molecules with three atoms, created by exposure of oxygen to electrical discharge or ultraviolet radiation, having a sharp smell, and being an effective oxidant for use in bleaching and sterilizing. |
ozone depletion |
a steady decline in ozone in Earth's stratosphere, or a springtime decline in stratospheric ozone in Earth's polar regions. The primary cause of ozone depletion is man-made chemicals, particularly chlorofluorocarbons (CFCs). |
ozone hole |
an area in the ozone layer where the ozone becomes thin. There is a large ozone hole over Antarctica and a smaller one over the North Pole. Scientists warn us this is dangerous. |
ozone layer |
an atmospheric layer between ten and twenty miles above the earth that contains a substantial concentration of ozone, which absorbs ultraviolet radiation from space and prevents some heat loss from the earth; ozonosphere. |
ozonize |
to treat, combine, or saturate with ozone. [2 definitions] |
ozonosphere |
see "ozone layer." |
P1 |
abbreviation of "passing," completed successfully. |