ACTIVATION

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does activation mean? 

• ACTIVATION (noun)
  The noun ACTIVATION has 3 senses:

1. stimulation of activity in an organism or chemical

2. the activity of causing to have energy and be active

3. making active and effective (as a bomb)

  Familiarity information: ACTIVATION used as a noun is uncommon.

 Dictionary entry details 

• ACTIVATION (noun)

Sense 1

Meaning:

Stimulation of activity in an organism or chemical

Classified under:

Nouns denoting natural processes

Hypernyms ("activation" is a kind of...):

stimulation ((physiology) the effect of a stimulus (on nerves or organs etc.))

Hyponyms (each of the following is a kind of "activation"):

indweller (activation by an inner spirit or force or principle)

Antonym:

inactivation (the process of rendering inactive)

Derivation:

activate (make (substances) radioactive)

activate (aerate (sewage) so as to favor the growth of organisms that decompose organic matter)

activate (make more adsorptive)

activate (put in motion or move to act)

Sense 2

Meaning:

The activity of causing to have energy and be active

Classified under:

Nouns denoting acts or actions

Synonyms:

activating; activation; energizing

Hypernyms ("activation" is a kind of...):

activity (any specific behavior)

Hyponyms (each of the following is a kind of "activation"):

electrification (the activity of thrilling or markedly exciting some person or group)

animation; invigoration; vivification (the activity of giving vitality and vigour to something)

Sense 3

Meaning:

Making active and effective (as a bomb)

Classified under:

Nouns denoting acts or actions

Hypernyms ("activation" is a kind of...):

beginning; commencement; start (the act of starting something)

Antonym:

deactivation (the act of deactivating or making ineffective (as a bomb))

Derivation:

activate (make active or more active)

 Context examples 

A foam that is packaged under pressure and released upon activation of an appropriate valve system.

(Aerosol Foam Dosage Form, NCI Thesaurus)

Contents packaged under pressure that are released upon activation of an appropriate valve system.

(Aerosol Dosage Form, NCI Thesaurus)

ARF interacts with many proteins and other molecules that regulate its state of activation or are involved in its intracellular function.

(ADP-Ribosylation Pathway, NCI Thesaurus/BIOCARTA)

A mist that is packaged under pressure and released upon activation of an appropriate valve system.

(Aerosol Mist Dosage Form, NCI Thesaurus)

Upon activation of an appropriate valve system, the liquid is expelled into the air, the propellant is vaporized and the ingredients are dispersed.

(Aerosol Solution Dosage Form, NCI Thesaurus)

MEK1/2 are dual-specificity threonine/tyrosine kinases that play key roles in the activation of the RAS/RAF/MEK/ERK pathway and are often upregulated in a variety of tumor cell types.

(MEK Inhibitor MEK162, NCI Thesaurus)

MEK is a key component of the RAS/RAF/MEK/ERK signaling pathway that regulates cell growth; constitutive activation of this pathway has been implicated in many cancers.

(MEK Inhibitor AZD8330, NCI Thesaurus)

It is stimulated by beta-adrenergic receptor activation but is insensitive to forskolin, calcium, and somatostatin.

(Adenylate Cyclase, NCI Thesaurus)

Localized prodrug activation provides targeted chemotherapy, thereby potentially reducing systemic side effects.

(Adenovirus-Encoding E.coli PNP, NCI Thesaurus)

CD3 and CD28, co-stimulatory molecules expressed on the surface of T-lymphocytes, play a key role in the activation of T-cells.

(Activated Marrow Infiltrating Lymphocytes, NCI Thesaurus)