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TAKE THE QUIZ“half-”
The following 4 entries include the term half-.
biological half-life
noun: the time that a living body requires to eliminate one half the quantity of an administered substance (as a radioisotope) through its normal channels of elimination
half-life
nounhalf-moon
nounhalf-value layer
noun: the thickness of an absorbing substance necessary to reduce by one half the initial intensity of the radiation passing through it
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Merriam-Webster unabridged
