-on2 |
used in naming inert gases. |
-on3 |
a chemical compound that does not contain oxygen in a carbonyl group. |
on |
above and supported by. [19 definitions] |
on account of |
because of. |
on a dime |
(informal) with great quickness, precision, or accuracy. |
on and on |
at excessive length. |
on an even keel |
well-balanced or stable. |
onanism |
self-gratification, esp. masturbation. [2 definitions] |
on approval |
for determination of satisfaction, without obligation to buy. |
on a silver platter |
without having to expend effort; undeservedly. |
on bail |
temporarily released from custody after bail is given. |
onboard |
transported, used, or installed upon a ship, aircraft, or other vehicle. [4 definitions] |
once |
at one time in the past; formerly. [7 definitions] |
once and for all |
firmly and decisively, with absolute finality. [2 definitions] |
once in a blue moon |
from time to time, but very rarely. |
once in a while |
sometimes but not very often; occasionally. |
once-over |
(informal) a hasty look at and evaluation of something or someone. |
onchocerciasis |
a tropical disease transmitted by flies in which parasitic worms cause itchy rashes, skin lesions, blindness, and sometimes elephantiasis; river blindness. |
oncidium |
any of various tropical orchids. |
oncology |
the medical science concerned with cancer, esp. with tumors. |
oncoming |
coming toward or near; approaching. [2 definitions] |