Noun1.half-life- the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate) half life period,period of time,time period- an amount of time; "a time period of 30 years"; "hastened the period...
The meaning of HALF-LIFE is the time required for half of something to undergo a process. How to use half-life in a sentence.
half-life (haf'līf), The period in which the radioactivity or number of atoms of a radioactive substance decreases by half; similarly applied to any substance, such as a drug in serum, whose quantity decreases exponentially with time. Compare:half-time. ...
half-life period 英[ˈhæfˌlaɪf ˈpiəriəd] 美[ˈhæfˌlaɪf ˈpɪriəd] 释义 [医] 半衰期(指放射性物质)
半数[ half of;part of;rest of] 半衰期[ half-life;half-life period] 半死不活;半死半活[ dying] ... zhidao.baidu.com|基于142个网页 2. 半衷期 光电英语词汇(H) ... half-life 半衷期 half-life period 半衷期 half-linear with 半线宽 ... www.diyifanwen.com|基于21个网页 3. 半化期...
Also calledbi·o·log·i·cal half-life[bahy, uh, -, loj, ik, uh, l , haf, -lahyf].Pharmacology.the time required for the activity of a substance taken into the body to lose onehalfits initial effectiveness. Informal.a brief period during which something flourishes before dying out. ...
Pharmacology. the time required for the activity of a substance taken into the body to lose one half its initial effectiveness. Informal. a brief period during which something flourishes before dying out.Discover More Word History and Origins Origin of half-life1 First recorded in 1905–10; half...
Half-Life Definition Definition starting with H (Many of the links in this article redirect to a specific reviewed product. Your purchase of these products through affiliate links helps to generate commission for LiveWell, at no extra cost.Learn more)...
Half-life has to be defined and the equation relating the half-life of a first-order reaction to the rate constant has to be derived. Concept introduction: Half-life: The time required for half of a reactant to be consumed in a reaction is said...
Half-life of a reaction is represented by the symbol as t 1 2 Half-life is discovered by Ernest Rutherford's in 1907 from the original term half-life period. The half-life period is then shortened as half-life in early 1950s. Half-life has to...