Ozark chinquapin
— Noun
– English
～ shrubby tree closely related to the Allegheny chinkapin but with larger leaves; southern midwestern United States
Ozark chinkapin
— Noun
– English
～ shrubby tree closely related to the Allegheny chinkapin but with larger leaves; southern midwestern United States
Ozark Mountains
— Noun
– English
～ an area of low mountains in northwestern Arkansas and southeastern Missouri and northeastern Oklahoma
ozarks
— Noun
– English
～ an area of low mountains in northwestern Arkansas and southeastern Missouri and northeastern Oklahoma
ozawa
— Noun
– English
～ United States conductor (born in Japan in 1935)
ozena
— Noun
– English
～ a chronic disease of the nose characterized by a foul-smelling nasal discharge and atrophy of nasal structures
ozocerite
— Noun
– English
～ a waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum; some varieties are used in making ceresin and candles
ozokerite
— Noun
– English
～ a waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum; some varieties are used in making ceresin and candles
ozone hole
— Noun
– English
～ an area of the ozone layer (near the poles) that is seasonally depleted of ozone
ozone
— Noun
– English
～ a colorless gas (O3) soluble in alkalis and cold water; a strong oxidizing agent; can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation)
ozone layer
— Noun
– English
～ a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun
ozonide
— Noun
– English
～ any of a class of unstable chemical compounds resulting from the addition of ozone to a double bond in an unsaturated compound
ozonise
— Verb
– English
～ convert (oxygen) into ozone
Ozonium
— Noun
– English
～ form genus of imperfect fungi
ozonize
— Verb
– English
～ convert (oxygen) into ozone
ozonosphere
— Noun
– English
～ a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun
Ozothamnus
— Noun
– English
～ genus of Australian shrubs and perennial herbs; sometimes included in genus Helichrysum
oil paint
— Noun
– English
～ paint in which a drying oil is the vehicle
oil painter
— Noun
– English
～ a painter who uses oil paints
oil painting
— Noun
– English
～ a picture painted with oil paints