Physics. the time required for one half
the atoms of a given amount of a radioactive substance to disintegrate.
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.
half life | Define half life at Dictionary.com
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Half-Life (stylized as HλLF-LIFE) is a science fiction first-person shooter video
game developed by Valve, released in 1998 by Sierra Studios for Microsoft ...
Half-Life, stylized as HλLF-LIFE, is a science fiction first-person shooter
developed and published by Valve. The player takes the perspective of scientist
Named Game of the Year by over 50 publications, Valve's debut title blends
action and adventure with award-winning technology to create a frighteningly ...
Half-Life Wiki is a comprehensive wiki encyclopedia focusing on the Half-Life /
Portal universe and its related subjects. Its main purpose is to collect all the ...
Official site. Includes screenshots, trailers, and a game overview.
Half-Life - Named Game of the Year by over 50 publications, Valve's debut title
blends action and adventure with award-winning technology to create a ...
Browse and play mods created for Half-Life at Mod DB.
Welcome to /r/HalfLife, a place to share pretty much everything from Valve's
game. ... Is there any way to get the WON version of Half-Life (or every GoldSrc ...