1. The time taken for the radioactivity of a specified isotope to fall to half its original value. the time required for any specified property (e.g. the concentration of a substance in the body) to decrease by half.
2. One of the best video games you could ever play along with Portal.
2. One of the best video games you could ever play along with Portal.
Scenario1: "Iodine-131 has a Half-life of 8.1 days"
Scenario2: I love Half-life, the story and gameplay is just mind blowing!
Scenario2: I love Half-life, the story and gameplay is just mind blowing!
by Zach T. Radass December 19, 2022
Get the Half-lifemug. by Unknown07724 January 8, 2025
Get the half-lifemug. BFFFFFTTT HAHAHAHHAH
its not real! ITS NOT REAL!!!!
hahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahaha
valve cant even count to three!!!
its not real! ITS NOT REAL!!!!
hahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahahahahahahhahaha
valve cant even count to three!!!
by ur_so_right_lad July 9, 2023
Get the Half Life 3mug. Guy: Half-Life 4 when?
Other guy: dawg... gaben cant count to 3... why do you think he can count to 4?
Other guy: dawg... gaben cant count to 3... why do you think he can count to 4?
by lil proot February 24, 2025
Get the Half-Life 4mug. by Eobix November 13, 2022
Get the Half Lifemug. 
by Based Mango September 14, 2022
Get the Half lifemug.