half-time


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half-time

 [haf´tīm″]
the time required for one half of a quantity of a substance to be eliminated from a system when the substance is eliminated at a rate proportional to its concentration. Symbol t½ or T½.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

half-time

(haf'tīm),
The time, in a first-order chemical (or enzymic) reaction, for half of the substance (substrate) to be converted or to disappear. Compare: half-life.
Farlex Partner Medical Dictionary © Farlex 2012

half-time

(haf'tīm)
The time, in a first-order chemical (or enzymic) reaction, for half of the substance (substrate) to be converted or to disappear.
Compare: half-life
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

half-time

(haf'tīm)
The time, in a first-order chemical (or enzymic) reaction, for half of the substance to be converted or disappear.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
We felt at half-time that if we'd kept the ball more in hand we might have made more yards, and that's what we came back out and did.
Thistle boss Alan Arcibald refused to blame on-loan Celtic kid Nesbitt's early moment of madness for the defeat and insisted he only subbed the teen at half-time for tactical reasons.
Anthony Watson's try just before half-time and Banahan's touchdown on 44 minutes were the turning points, the Falcons boss saying: "That period just before and just after half-time is key to everything, and we conceded in both parts which was a real killer blow.
Huddlestone said: "It was spot on at half-time and just what we needed.
Some recent half-time performers at the NFL's championship game were Madonna in 2012, The Black Eyed Peas with Usher and Slash in 2011, The Who in 2010, and Bruce Springsteen and the E Street Band in 2009.
But Aldershot's pressure continued and the half-time replacements combined to level matters.
Llanfoist were hoping to lift themselves off the bottom position from a derby home match with Pandy, but it was Pandy that established a 5-0 half-time lead and went on to win the match 9-1.
"We showed the character and spirit we've got in the second half to come from 2-0 down at half-time and win," said Young.
An important function at half-time takes place inside the dressing room and what coaches tell the players during the pep talk, but the downside is players cooling down even more in a longer break.
Tottenham forward Defoe insisted McClaren had been a calming influence during the half-time team talk.
He was sent off on half-time after a second booking and Folkes departed in the last minute.
Singh and his associates at the University of Missouri-Columbia have used this technique on 750 patients and have diagnosed gastroparesis--defined as a gastric emptying half-time of over 100 minutes-in 168.