iodine-131
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～ heavy radioactive isotope of iodine with a half-life of 8 days; used in a sodium salt to diagnose thyroid disease and to treat goiter
iodoamino acid
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～ an amino acid with iodine added
iodochlorhydroxyquin
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～ drug used to treat certain fungal infection (as athlete's foot)
iodocompound
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～ a compound containing the covalent iodine radical
iodoform
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～ a yellowish crystalline solid with a penetrating odor; sometimes used as an antiseptic dressing
iodoprotein
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～ a protein that contains iodine
iodopsin
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～ a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision
iodothyronine
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～ thyronine with iodine added
iodotyrosine
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～ tyrosine with iodine added
IOL
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～ a clear plastic lens that is implanted in the eye; usually done when the natural lens has been removed in a cataract operation
ion exchange
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～ a process in which ions are exchanged between a solution and an insoluble (usually resinous) solid; widely used in industrial processing
ion
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～ a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons
ion beam
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～ a beam of ions moving in the same direction at the same speed
ion engine
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～ a type of reaction-propulsion engine to propel rockets in space; a stream of positive ions is accelerated to a high velocity by an electric field
ionesco
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～ French dramatist (born in Romania) who was a leading exponent of the theater of the absurd (1912-1994)
ionia
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～ region of western Asia Minor colonized by ancient Greeks
ionian
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～ a member of one of four linguistic divisions of the prehistoric Greeks
Ionian
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～ the ancient Greek inhabitants of Attica and related regions in Ionia
ionic charge
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～ the charge on an ion is equal to a constant charge e multiplied by an integer from 1 to 15