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1. To render active.
2. To make radioactive.
Farlex Partner Medical Dictionary © Farlex 2012


tr.v. acti·vated, acti·vating, acti·vates
1. To set in motion; make active or more active.
2. Biology To convert (certain biological compounds) into biologically active derivatives.

ac′ti·va′tion n.
ac′ti·va′tor n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


(1) To render something active.
(2) To make something radioactive.
Chemistry To convert a compound—e.g., a provitamin or enzyme—into an active form or different compound, in particular one that has a specific biologic action
Example, activation by UV light Ergosterol, lumisterol, tachysterol, vitamin D2
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


1. To render active.
2. To make radioactive.
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about activate

Q. Are there any nice activities for adults with autism? I've been helping a very nice man of 45 of years old and I'm looking for some new things I can do with him in our time together. any ideas?

A. Autistic people react wonderfully with animals. for instance- i saw a group of severe Autistic teenagers going to swim with dolphins. the effect was amazing! taking him to the zoo, or even to the park to feed ducks, pet dogs, whatever.. could have a great effect on him.
hope i helped!
tell me how it went.

Q. what is a passive smoking? and is it dangerous as an active?

A. Passive smoking is the exposure to cigarettes smoke emitted from cigarettes smoke by other person. It's dangerous and may increase the risk to several diseases similar to active smoking (one's exposure to smoke emitted from the cigarettes he or she is smoking) although the risk is of lower magnitude. Example for passive smoking is children of smokers etc.

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Q. i swim a lot ! what are the advantages of swimming over other sport activities? on what part of the body does it work the most ?

A. its a good workout but your not really going to burn as much calories as a regular work out.

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References in periodicals archive ?
For all the three cases, we have compared the muscle activation of five muscles that are required for the sit-to-stand and walking.
In a major relief to customers, the amount, in case of a wrong activation, should be refunded within 24 hours of the customer's requests.
Electromyography was used to quantify muscle activation using an 8 channel telemetered EMG system (Myomonitor 4, DelSys Inc., Boston, MA).
* Kindle Fire tablets are beginning to make their way into the workplace with a steady stream of activations since Amazon launched the product late last year.
1994)] cannot respond to [E.sub.2] or XEs via [Ca.sup.2+] fluxes, PRL release (these studies), or ERK activation (Bulayeva et al.
Kaufman maintains that the chances of a false activation (the result of-an interfering radio signal) are "one in twenty-nine million," and suggests that documented accidents are the result of operator error.
provide continuous activation until a formal system reset procedure is performed?
In the week preceding Christmas, Apple's top seller (new activation) was not any one of the three phones it released in 2017.
The Safe Activation API allows a vendor website, shopping cart or custom application to interact directly with data stored in the Safe Activation server.
Apple products once again proved their popularity after conquering the top five slots on the list of the most device activations during the Christmas holiday.

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