| oophorectomy |
a surgical operation involving the removal of one or both ovaries; ovariotomy. |
| oophoritis |
inflammation of one or both ovaries; ovaritis. |
| oops |
a mild expression of dismay, sudden embarrassment, or unpleasant surprise, esp. at one's own mistake; whoops. |
| ootheca |
an egg case, as of certain insects or mollusks. |
| ooze1 |
to seep out gradually and slowly, as liquid, gas, or sound may do. [7 definitions] |
| ooze2 |
any particularly soft mud, or an area, such as a marsh, that is soft and muddy. [2 definitions] |
| ooze leather |
calfskin, sheepskin, or goatskin leather, having a velvety finish. |
| oozy1 |
giving off, or wet with, moisture. |
| oozy2 |
of, like, or having soft mud. |
| op- |
against. [2 definitions] |
| opacity |
the quality, state, or degree of being opaque; lack of transparency. [4 definitions] |
| opal |
a variously colored, often iridescent, hydrated form of silica often used as a semiprecious stone. |
| opalescent |
exhibiting a spectrum of colors or changing colors like that of an opal; iridescent. [2 definitions] |
| opaline |
like opal; opalescent. [2 definitions] |
| opaque |
not allowing light to pass through. (Cf. transparent.) [6 definitions] |
| op art |
a style of abstract, usu. hard-edged art in which forms, spaces, and colors are deliberately arranged to produce optical ambiguities and illusions. |
| op. cit. |
abbreviation of "opere citato" (Latin); in the work cited. |
| ope |
(archaic) to open. [2 definitions] |
| OPEC |
abbreviation of "Organization of Petroleum Exporting Countries." |
| op-ed |
a newspaper page, generally appearing opposite the editorial page, that presents the submitted opinions or contributions of readers, or a single signed article on such a page. [2 definitions] |
| open |
allowing entry or access; not shut, enclosed, or fastened. [27 definitions] |