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half life ['hɑːflaɪf]
med.	período de vida media; tiempo de mitad
nucl.phys.	período de semidesintegración
half-life ['hɑ:flaɪf]
gen.	vida media
chem.	periodo de vida media
environ.	media de vida
nat.sc.	periodo de semidesintegración
nucl.pow.	período radiactivo; semivida radiactiva
pharma.	hemivida f; semivida f; vida mitad
half-life The time required for one-half the atoms of a given amount of radioactive material to undergo radioactive decay ['hɑ:flaɪf]
environ.	media de vida
English thesaurus
half-life ['hɑ:flaɪf]
abbr., med.	T 1/2
metrol.	The time span necessary for the atoms of a nuclide to disintegrate by one half
USA	The time required for the activity of a given radioactive species to decrease to half of its initial value due to radioactive decay (JP 3-11)
Half-Life ['hɑ:flaɪf]
med.	The time it takes a drug to lose half its original concentration or activity after being introduced into the body. Drug half-life is considered when determining drug dosing.

half life: 42 phrases in 12 subjects

Agriculture	1
Chemistry	3
General	2
Health care	5
Medical	5
Natural sciences	2
Nuclear and fusion power	3
Nuclear physics	4
Pharmacy and pharmacology	8
Radiology	3
Technology	5
United Nations	1