Half Life

Definition: Half Life

Half Life

Noun

1. 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).

Specialty Definitions: Half Life

Domain	Definitions
Aerospace	The average time required for one half the atoms in a sample of radioactive element to decay. The half life t(1/2) is given by t(1/2) = (ln 2) / ?where ? is the decay constant. (references)
Source: compiled by the editor from various references; see credits.

Top

Synonym: Half Life

Synonym: half-life (n). (additional references)

Top

Crosswords: Half Life

English words defined with "half life": Primer seizin. (references)

Specialty definitions using "half life": effective half life ♦ Food security ♦ lung dose ♦ median remaining lifetime, median residual lifetime ♦ Shandean Exactness ♦ Trite Expressions. (references)

Top

Modern Usage: Half Life

Domain	Usage
Movie/TV Titles	Half Life (1985)
Source: compiled by the editor from various references; see credits.

Top

Commercial Usage: Half Life

Domain	Title
Books	Half Life Counter-Strike (reference) Insect Dreams: The Half Life of Gregor Samsa (reference) (more book examples)

Music	Half Life (reference) (more classical music examples; more popular music examples)

High Tech	SIERRA ATTRACTIONS Half Life Platinum 2 (Windows) (reference) HALF LIFE BLUE SHIFT B43 WIN CD (reference) (more camera examples; more video game examples; more computer examples; more electronic examples; more software examples)
Source: compiled by the editor from various references; see credits.

Top

Non-Fiction Usage: Half Life

Subject	Topic	Quote
Health		Dose ranges of 200-800 mg/kg/mo have been shown to be effective, but dose or frequency of infusions must be tailored to the individual patient, because half life of infused IVIG varies widely. (references)
Source: compiled by the editor from ICON Group International, Inc.; see credits.

Top

Expression: Half Life

Expression using "half life": effective half life. Additional references.
Source: compiled by the editor from various references; see credits.

Top

Frequency of Internet Keywords: Half Life

The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com.

Expression	Frequency per Day
half life	7,277
half life 2	3,355
half life cd key	1,821
half life update	993
half life mods	783
half life cheat	741
half life patch	527
half life walk through	508
counter strike half life	467
half life download	382
Source: compiled by the editor from various references; see credits.

Top

Modern Translations: Half Life

Language		Translations for "half life"; alternative meanings/domain in parentheses.
Danish		effektiv halveringstid (effective half life). (various references)

Dutch		effectieve halveringstijd (effective half life). (various references)

French		période résultante (effective half life), période effective (effective half life), demi-vie résultante (effective half life). (various references)

German		effektive Halbwertzeit (effective half life). (various references)

Greek		ενεργός χρόνος υποδιπλασιασμού (effective half life). (various references)

Italian		tempo di dimezzamento effettivo (effective half life). (various references)

Japanese Kanji		半減期 . (various references)

Japanese Katakana		は�"�'�"き. (various references)

Pig Latin		alfhay ifelay.(various references)
Source: compiled by the editor from various translation references.

Top

Misspellings: Half Life

Misspellings
	"Half Life" is suggested in spellcheckers for the following: halflife. (additional references)
Source: compiled by the editor, based on several corpora (additional references).

Top

Anagrams: Half Life

Scrabble® Enable2K-Verified Anagrams
	Direct Anagrams: halflife.
	Words within the letters "a-e-f-f-h-i-l-l"
	-2 letters: faille, fellah.
	-3 letters: fella, fille, flail, ileal.
	-4 letters: alef, alif, elhi, fail, fall, feal, fell, fief, fife, fila, file, fill, flea, hail, hale, half, hall, heal, heil, hell, hila, hill, ilea, leaf, leal, lief, life.
	-5 letters: aff, ail, ale, all, eff, elf, ell, feh, fie, fil, hae, hie, iff, ill, lea, lei, lie.
	Words containing the letters "a-e-f-f-h-i-l-l"
	+2 letters: fallfishes.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.