half-life
Part of speech: noun
Morphological type: derivation
Topics: chemistry
medicine
natural-sciences
pharmacology
physical-sciences
sciences
Etymology: Etymology tree
English half-
English life
English half-life
From half- + life.
Inflected forms:
form: half-lives
pos: noun
tags: plural
Senses:
gloss: The time required for half the nuclei in a sample of an isotope to undergo radioactive decay.
pos: noun
examples: "The guy that just left—what's he got in his lungs?" / "Well, I'm not very sure. But the two best candidates are uranium-233 and plutonium-239, one or both." / "They're in his bones too, aren't they?" / "Yeah, they're both boneseekers. And they've got half-lives of one hundred sixty-two thousand and twenty-four thousand years respectively. So they stay hot for a long time."
O₂^(•−) and OH^• are highly unstable (half-life at the level of microseconds and nanoseconds, respectively) and cannot cross membrane, while H₂O₂, though not a free radical but a ROS, is relatively stable (half-life around 1 ms) (Møller et al. 2007) and can cross membranes through aquaporins.
gloss: In a chemical reaction, the time required for the concentration of a reactant to fall from a chosen value to half that value.
pos: noun
tags: physical
gloss: The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacological, physiologic, or radiological activity.
pos: noun
examples: For nonporous surfaces such as steel, in a dark and low-humidity environment, the CCP virus has an 18-hour half-life—the time required for it to decrease by half , according to the researchers' findings.
gloss: The amount of time it takes for an idea or a fashion to lose half of its influential power.
pos: noun
examples: Most books of scholarship have surprisingly short intellectual half-lives during which they make a difference"
Related words: radioactivity
Translations:
lang: Armenian
word: կիսատրոհման պարբերություն
roman: kisatrohman parberutʻyun
lang: Azerbaijani
word: yarımdağılma dövrü
lang: Belarusian
word: перыяд паўраспаду
roman: pjeryjad pawraspadu
lang: Bulgarian
word: период на полуразпад
roman: period na polurazpad
lang: Catalan
word: període de semidesintegració
lang: Catalan
word: període radioactiu
lang: Chinese Mandarin
word: 半衰期
roman: bànshuāiqī
lang: Czech
word: poločas rozpadu
lang: Danish
word: halveringstid
lang: Dutch
word: halfwaardetijd
lang: Dutch
word: halveringstijd
lang: Esperanto
word: duoniĝa tempo
lang: Estonian
word: poolestusaeg
lang: Finnish
word: puoliintumisaika
lang: French
word: demi-vie
lang: Galician
word: período de semidesintegración
lang: Georgian
word: ნახევარდაშლის პერიოდი
roman: naxevardašlis ṗeriodi
lang: Georgian
word: ნახევრად დაშლის პერიოდი
roman: naxevrad dašlis ṗeriodi
lang: German
word: Halbwertszeit
lang: Greek
word: χρόνος ημιζωής
roman: chrónos imizoḯs
lang: Hindi
word: अर्धायु
roman: ardhāyu
lang: Hungarian
word: felezési idő
lang: Icelandic
word: helmingunartími
lang: Indonesian
word: waktu paruh
lang: Irish
word: leathré
lang: Italian
word: emivita
lang: Italian
word: semivita
lang: Japanese
word: 半減期
roman: hangenki
lang: Kannada
word: ಅರ್ಧಾಯುಷ್ಯ
roman: ardhāyuṣya
lang: Kazakh
word: жартылай ыдырау мерзімі
roman: jartylai ydyrau merzımı
lang: Korean
word: 반감기
roman: ban'gamgi
lang: Latvian
word: pussabrukšanas periods
lang: Lithuanian
word: pusėjimo trukmė
lang: Macedonian
word: период на полураспад
roman: period na poluraspad
lang: Malay
word: separuh hayat
lang: Malayalam
word: അർദ്ധായുസ്സ്
roman: aṟddhāyussŭ
lang: Norwegian Bokmål
word: halveringstid
lang: Norwegian Nynorsk
word: halveringstid
lang: Persian
word: نیمهعمر
roman: nime-'omr
lang: Polish
word: czas połowicznego rozpadu
lang: Polish
word: okres połowicznego rozpadu
lang: Portuguese
word: meia-vida
lang: Portuguese
word: semivida
lang: Romanian
word: perioadă de înjumătățire
lang: Russian
word: пери́од полураспа́да
roman: períod poluraspáda
lang: Serbo-Croatian
word: vreme poluraspada
lang: Slovak
word: polčas premeny
lang: Slovene
word: razpolovni čas
lang: Spanish
word: periodo de semidesintegración
lang: Spanish
word: semivida
lang: Spanish
word: vida media
lang: Swedish
word: halveringstid
lang: Tagalog
word: kalahatimbuhay
lang: Tamil
word: அரைவாழ்வுக் காலம்
roman: araivāḻvuk kālam
lang: Telugu
word: అర్థ జీవితకాలం
roman: artha jīvitakālaṁ
lang: Thai
word: ครึ่งชีวิต
lang: Ukrainian
word: пері́од напівро́зпаду
roman: períod napivrózpadu
lang: Uzbek
word: yarim yemirilish davri
lang: Vietnamese
word: chu kì bán rã
lang: Vietnamese
word: chu kỳ bán rã
lang: Vietnamese
word: chu kỳ nửa phân rã