| often |
on many occasions; frequently. |
| oftentimes |
on numerous occasions; often. |
| ogee |
an elongated S-shaped curve, or a molding in such a curve. |
| ogive |
the diagonal rib of a Gothic vault. [3 definitions] |
| Oglala |
the Teton tribe of Dakota Indians living in South Dakota, west of the Missouri River. [2 definitions] |
| ogle |
to look or stare at (someone) in a lustful or flirtatious manner. [2 definitions] |
| ogre |
an ugly giant or monstrous person that eats people, esp. one in folk tales and children's stories. [2 definitions] |
| OH |
abbreviation of "Ohio," a Midwestern U.S. state between Pennsylvania and Indiana. |
| oh |
used to express surprise, pain, disbelief, or the like. [2 definitions] |
| Ohio |
a Midwestern U.S. state between Pennsylvania and Indiana. (abbr.: OH) [2 definitions] |
| ohm |
a unit of electrical resistance equal to the resistance of a circuit in which an electromotive force of one volt produces a current of one ampere. |
| ohmmeter |
an instrument that measures electrical resistance directly in ohms. |
| -oid |
resembling (whatever is specified); having the characteristics of. [2 definitions] |
| oil |
any of numerous mineral, animal, plant, or synthetic substances that are viscous, usu. liquid, and greasy, and that are soluble in ether or alcohol but not in water. [7 definitions] |
| oil cake |
a compressed cake of ground linseed, cottonseed, soybean, or the like, from which the oil has been extracted, used as feed or fertilizer. |
| oilcloth |
a heavy smooth cloth that has been treated with oil and other materials to make it waterproof, and that is often used to line cupboards or as a tablecloth. |
| oil color |
a paint made of pigment ground in oil, usu. linseed; oil paint. |
| oil field |
an area having large deposits of oil, esp. one with many wells. |
| oil of vitriol |
see "sulfuric acid." |
| oil painting |
a painting executed in oil colors. [2 definitions] |
| oilpaper |
paper made transparent and water-resistant by soaking in oil. |