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-life mug.The Employee Half-Life of a workplace is the amount of time it takes for half of a new batch of employees to quit.
An EHL of less than three months is generally regarded as a bad sign in business.
An EHL of less than three months is generally regarded as a bad sign in business.
When I first joined Acme Industries, there were five other new employees with me. After about six weeks, only three of us remained, including myself. So Acme Industries has an Employee Half-Life of about six weeks.
by Shepherd Guy April 9, 2025
Get the Employee Half-Life mug.It's the name of a game that doesn't exist and will never exist.
It's often used to tease Half-Life fans.
It's often used to tease Half-Life fans.
Example: Here we have Q, who is a Half-Life fan, and V is going to tease Q.
V: "Hey man, Half-Life 3 just got released!"
Q: "Dih!"
VALVE RELEASE HL3!!
V: "Hey man, Half-Life 3 just got released!"
Q: "Dih!"
VALVE RELEASE HL3!!
by 22chim October 29, 2025
Get the Half-life 3 mug.A sudden turning point in how things in a category are made due to a revolutionary item created in that category
(Like how half life 1 changed game making)
(Like how half life 1 changed game making)
by declandude25_newer May 21, 2022
Get the The Half Life Point mug.by Unknown07724 January 8, 2025
Get the half-life mug.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 3 mug.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 4 mug.