the erosive process of washing away soil or gravel by water (as from a roadway); "from the house they watched the washout of their newly seeded lawn by the water"
the channel or break produced by erosion of relatively soft soil by water; "it was several days after the storm before they could repair the washout and open the road"
endorsed authoritatively as having met certain requirements; "a certified public accountant"
holding appropriate documentation and officially on record as qualified to perform a specified function or practice a specified skill; "a registered pharmacist"; "a registered hospital"
having quality or payment or delivery guaranteed; "certified milk"; "certified check"; "certified mail"
difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge; "the professor's lectures were so abstruse that students tended to avoid them"; "a deep metaphysical theory"; "some recondite problem in historiography"
the action of stretching something tight; "tension holds the belt in the pulleys"
(physics) a stress that produces an elongation of an elastic physical body; "the direction of maximum tension moves asymptotically toward the direction of the shear"
a balance between and interplay of opposing elements or tendencies (especially in art or literature); "there is a tension created between narrative time and movie time"; "there is a tension between these approaches to understanding history"
(psychology) a state of mental or emotional strain or suspense; "he suffered from fatigue and emotional tension"; "stress is a vasoconstrictor"
the physical condition of being stretched or strained; "it places great tension on the leg muscles"; "he could feel the tenseness of her body"