English
Noun
wikipedia
en-infl-noun|sg=half-life|half-lives
#physics The time required for half of the nucleus|nuclei in a sample of a specific isotope to undergo radioactive decay.
#chemistry In a chemical reaction, the time required for the concentration of a reactant to fall from a chosen value to half that value.
#medicine The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity. Year introduced in w:MeSH: 1974(1971)
#(culture) The time it takes for an idea or a fashion to lose half of its influential power. "Most books of scholarship have surprisingly short intellectual half-lives during which they make a difference" (Robert Ackerman, 1991. Introduction to Jane Ellen Harrison's Prolegomena to the Study of Greek Religion (1903).)
Translations
rfc-trans
Arabic: ARchar|ع�ر ا��ص�
Catalan: perÃode de semidesintegració, perÃode radioactiu
Chinese: �衰�
Czech: polo�as rozpadu
Danish: halveringstid#Danish|halveringstid
Dutch: halfwaardetijd, halveringstijd
Esperanto: duoni�tempo
Estonian: poolestusaeg
Finnish: puoliintumisaika (1,2,3)
French: demi-vie f
mid
German: Halbwertszeit f
Greek: Πε�ίοδο� ημιζ�ή�
Hebrew: ��צ�ת ����
Italian: emivita f, semivita f, tempo di dimezzamento m (1,2,3)
Japanese: ��� (�����, hangenki)
Polish: okres po�owicznego rozpadu m
Portuguese: meia-vida f, perÃodo de semidesintegração m
Spanish: periodo de semidesintegración m; semivida f; hemivida f; vida mitad f
Swedish: halveringstid#Swedish|halveringstid
Category:English nouns with irregular plurals
fr:half-life
ja:half-life
ru:half-life
vi:half-life
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