oid·i·um [ō-'i-dē-əm] -n
- any of a genus ( Oidiumof the family Moniliaceae) of imperfect fungi many of which are now considered to be conidial stages of various powdery mildews
- one of the small conidia borne in chains by various fungi (as an oidium) called also arthrospore
- a powdery mildew esp. of grapes caused by an oidium
oil ['ȯi(-ə)l] -n
- any of numerous unctuous combustible substances that are liquid or can be liquefied easily on warming, are soluble in ether but not in water, and leave a greasy stain on paper or cloth
- petroleum
- the petroleum industry
- a substance (as a cosmetic preparation) of oily consistency
- an oil color used by an artist
- a painting done in oil colors
- unctuous or flattering speech
- to smear, rub over, furnish, or lubricate with oil
- to take on fuel oil
oil beetle -n
- any of various blister beetles (genus Meloeor a related genus) that emit a yellowish liquid from the leg joints when disturbed
oil·bird ['ȯi(-ə)l-,bərd] -n
- a nocturnal bird ( Steatornis caripensis) of northern So. America and Trinidad that is related to the nightjars, feeds chiefly on the fatty fruits of various palms, and has fatty young from which an oil used esp. in cooking is extracted called also guacharo
oil cake -n
- the solid residue after extracting the oil from seeds (as of cotton)
oil·can ['ȯi(-ə)l-,kan] -n
- a can for oil
- a spouted can designed to release oil drop by drop (as for lubricating machinery)
oil·cloth [-,klȯth] -n
- cloth treated with oil or paint and used for table and shelf coverings
oil color -n
- a pigment used for oil paint
- oil paint
oiled ['ȯi(-ə)ld] -adj
- lubricated, treated, or covered with or as if with oil
- drunk
oil·er ['ȯi-lər] -n
- a person who oils something
- a receptacle or device for applying oil
- oilskin
- an auxiliary naval vessel used for refueling at sea
oil field -n
- a region rich in petroleum deposits
- one that has been brought into production
oil gland -n
- : a gland (as of the skin) that produces an oily secretion: as
- a sebaceous gland
- uropygial gland
oil·man ['ȯi(-ə)l-mən, -,man] -n
- an oil company executive
- an oil field worker
oil of vitriol
- concentrated sulfuric acid
oil of wintergreen
- the methyl ester of salicylic acid that is used as a flavoring and as a counterirritant
oil paint -n
- paint in which a drying oil is the vehicle
oil painting -n
- the act or art of painting in oil colors
- a picture painted in oils
- painting that uses pigments orig. ground in oil
oil palm -n
- an African pinnate-leaved palm ( Elaeis guineensis) cultivated for its clustered fruit whose flesh and seeds yield oil
oil pan -n
- the lower section of the crankcase used as a lubricating-oil reservoir on an internal combustion engine
oil patch -n
- oil field
- the petroleum industry
oil·seed ['ȯi(-ə)l-,sēd] -n
- a seed or crop (as flaxseed) grown mainly for oil
oil shale -n
- a rock (as shale) from which oil can be recovered by distillation
oil·skin ['ȯi(-ə)l-,skin] -n
- an oiled waterproof cloth used for coverings and garments
- an oilskin raincoat
- an oilskin suit of coat and trousers
oil slick -n
- a film of oil floating on water
oil·stone ['ȯi(-ə)l-,stōn] -n
- a whetstone for use with oil
oil well -n
- a well from which petroleum is obtained
oily ['ȯi-lē] -adj, adv, n
- of, relating to, or consisting of oil
- covered or impregnated with oil
- relatively high in naturally secreted oils
- excessively smooth or suave in manner
oink ['ȯiŋk] -n, vi
- the natural noise of a hog
oint·ment ['ȯint-mənt] -n
- a salve or unguent for application to the skin
oi·ti·ci·ca [,ȯi-tə-'sē-kə] -n
- any of several So. American trees
- a Brazilian tree ( Licania rigida) with seeds that yield a drying oil similar to tung oil