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. Take off boxers like you would to masturbate. Wrap both her hands on your penis shaft leaving several inches of exposed penis. Slide up half a length, slide down half a length, repeat until orgasm. A half and half pass everyday keeps the random boners away
by horny 4 heaed October 29, 2012
Get the half and half passmug. A song that is built around--or relies so heavily on--a sample from another it might (or might as well) be considered a mashup of the new song and the sampled one.
"Pepper” by the Butthole Surfers samples “Loser” by Beck, and “Ice Ice Baby” by Vanilla Ice samples “Under Pressure” by Queen so much that each might as well be called a mashup, or at least a "half-mash."
by Hoban Alleyne May 21, 2018
Get the Half-mashmug. by Enderdragon2032//4_7D September 21, 2022
Get the Half-Veganmug. by jkcasey December 1, 2019
Get the half daf daymug. 1. Use a blender to combine semen and laxative at a 1:1 ratio.
2. Drink.
3. Wait 10 minutes.
4. Enjoy.
2. Drink.
3. Wait 10 minutes.
4. Enjoy.
by Thomas A. August 5, 2017
Get the alabama half&halfmug. by Observer 777 August 25, 2021
Get the half mile freewaymug.