Glossary · Nouns · O
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TermTypeDefinitionClassificationsUpdated
Oil PalmnounMWEpinnate-leaved palms of the genus Elaeis having dense clusters of crowded flowers and bright red fruit and yielding high quality palm oilsverified
Oil PressurenounMWEpressure that keeps oil on the moving parts of an internal-combustion engineverified
Oil ProductionnounMWEthe act of drilling a hole in the earth in the hope of producing petroleumverified
Oil SlicknounMWEa thin film of oil floating on top of water (especially crude oil spilled from a ship)verified
Oil-Water InterfacenounMWEan interface forming the boundary between the non-miscible liquids oil and waterverified
Oilbirdnounnocturnal fruit-eating bird of South America that has fatty young yielding an oil that is used instead of butterverified
Oilskinnouna macintosh made from cotton fabric treated with oil and pigment to make it waterproofverified
Ointmentnountoiletry consisting of any of various substances in the form of a thick liquid that have a soothing and moisturizing effect when applied to the skinverified
Okranountall coarse annual of Old World tropics widely cultivated in southern United States and West Indies for its long mucilaginous green pods used as basis for soups and stewsverified
Okra PlantnounMWEtall coarse annual of Old World tropics widely cultivated in southern United States and West Indies for its long mucilaginous green pods used as basis for soups and stewsverified
Old Boy NetworknounMWEan exclusive informal network linking members of a social class or profession or organization in order to provide connections and information and favors, especially in business or politicsverified
Old FashionednounMWEstate of being out of touch with contemporary times, especially with regard to social mores and fashionverified
Old GrowthnounMWEforest or woodland having a mature or overly mature ecosystem more or less uninfluenced by human activityverified
Old MaidnounMWEany of various plants of the genus Zinnia cultivated for their variously and brightly colored flower headsverified
Old Maid FlowernounMWEany of various plants of the genus Zinnia cultivated for their variously and brightly colored flower headsverified
Old MannounMWEaromatic herb of temperate Eurasia and North Africa having a bitter taste used in making the liqueur absintheverified
Old Man's BeardnounMWEvigorous deciduous climber of Europe to Afghanistan and Lebanon having panicles of fragrant green-white flowers in summer and autumnverified
Old StylenounMWEa typeface (based on an 18th century design) distinguished by irregularity and slanted ascender serifs and little contrast between light and heavy strokesverified
Old Style FontnounMWEa typeface (based on an 18th century design) distinguished by irregularity and slanted ascender serifs and little contrast between light and heavy strokesverified
Old-Maid's BonnetnounMWEstout perennial of eastern and central North America having palmate leaves and showy racemose blue flowersverified
Old-Man-Of-The-Woodsnounedible mild-tasting mushroom found in coniferous woodlands of eastern North Americaverified
Oleandernounan ornamental but poisonous flowering shrub having narrow evergreen leaves and clusters of fragrant white to pink or red flowers: native to East Indies but widely cultivated in warm regionsverified
Oleasternounany of several shrubs of the genus Elaeagnus having silver-white twigs and yellow flowers followed by olivelike fruitsverified
Olecranonnounprocess of the ulna that forms the outer bump of the elbow and fits into the fossa of the humerus when the arm is extendedverified
Olecranon ProcessnounMWEprocess of the ulna that forms the outer bump of the elbow and fits into the fossa of the humerus when the arm is extendedverified
Oleomargarinenouna spread made chiefly from vegetable oils and used as a substitute for butterverified