relativistic mass
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～ (physics) the mass of a body in motion relative to the observer: it is equal to the rest mass multiplied by a factor that is greater than 1 and that increases as the magnitude of the velocity increases
relativity
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～ the quality of being relative and having significance only in relation to something else
relativity
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～ (physics) the theory that space and time are relative concepts rather than absolute concepts
relatum
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～ a term in a proposition that is related to the referent of the proposition
relaxant
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～ a drug that relaxes and relieves tension
relaxation
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～ a feeling of refreshing tranquility and an absence of tension or worry; "the easiness we feel when sleeping"
relaxation
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～ (physiology) the gradual lengthening of inactive muscle or muscle fibers
relaxation
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～ (physics) the exponential return of a system to equilibrium after a disturbance
relaxation
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～ the act of making less strict
relaxation
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～ an occurrence of control or strength weakening; "the relaxation of requirements"; "the loosening of his grip"; "the slackening of the wind"
relaxation
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～ a method of solving simultaneous equations by guessing a solution and then reducing the errors that result by successive approximations until all the errors are less than some specified amount
relaxation behavior
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～ (physics) the exponential return of a system to equilibrium after a disturbance
relaxation
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～ freedom from activity (work or strain or responsibility); "took his repose by the swimming pool"
relaxation method
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～ a method of solving simultaneous equations by guessing a solution and then reducing the errors that result by successive approximations until all the errors are less than some specified amount
relaxer
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～ any agent that produces relaxation; "music is a good relaxer"
relaxin
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～ hormone secreted by the corpus luteum during the last days of pregnancy; relaxes the pelvic ligaments and prepares the uterus for labor
relay
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～ a crew of workers who relieve another crew
relay race
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～ a race between teams; each member runs or swims part of the distance
relay link
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～ an amplifier for restoring the strength of a transmitted signal
relay
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～ a fresh team to relieve weary draft animals