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Longman Dictionary of Contemporary English
reactive
adjective
COLLOCATIONS FROM CORPUS
■ ADVERB
highly
▪ The ones of interest here are a highly reactive chemical species called free oxygen radicals.
▪ Another type of aggressive child, for example, is highly reactive to sensations.
▪ Those used range from mild organic acids such as citric acid to phosphoric acid highly reactive sulphuric and hydrochloric acids.
▪ Oxygen is a highly reactive gas, combining with many elements in a fierce explosive union we call fire or burning.
■ NOUN
oxygen
▪ Chemiluminescence is a reliable means of estimating reactive oxygen species in biological media.
▪ Increased reactive oxygen species values in the inflamed colonic mucosa in rats were seen by chemiluminescence.
▪ An outline of reactive oxygen metabolite chemistry in biological tissues is given in the Figure.
▪ These three reactive oxygen species are believed to be responsible for tissue injury.
▪ Chemiluminescence is a simple, sensitive, and reproducible technique that can be used to estimate reactive oxygen species in biological media.
▪ Using chemiluminescence produced by cells and extracts, several investigators have showed the role of reactive oxygen species in different disorders.
▪ In contrast, reports on the use of this technique for tissue reactive oxygen species are very limited.
▪ One potential source for the increased values of reactive oxygen species in inflammatory bowel disease is the neutrophil.
EXAMPLES FROM OTHER ENTRIES
▪ Many businesses follow a reactive strategy rather than initiating new products.
EXAMPLES FROM CORPUS
▪ That is, I have been primarily a reactive person.
▪ The reactive approach is virtually always ultimately more costly than the preventive approach.
▪ The strength of our process is not in reactive governance.
▪ They are by nature reactive rather than pro-active.
▪ They see themselves as having both reactive and proactive roles.
▪ We must be reactive rather than proactive, because becoming motivated and taking initiatives involves gaining power.
The Collaborative International Dictionary
Reactive

Reactive \Re*act"ive\ (r[-e]*[a^]kt"[i^]v), a. [Cf. F. r['e]actif.] Having power to react; tending to reaction; of the nature of reaction. -- Re*act"ive*ly, adv. -- Re*act"ive*ness, n.

Douglas Harper's Etymology Dictionary
reactive

1712, from react + -ive. Related: Reactively; reactiveness; reactivity.

Wiktionary
reactive

a. 1 that reacts or responds to a stimulus 2 (context chemistry English) that readily takes part in reactions 3 (context electronics English) Characterized by induction or capacitance rather than resistance. 4 Reacting to the past rather than anticipating the future, not predictive.

WordNet
reactive
  1. adj. participating readily in reactions; "sodium is a reactive metal"; "free radicals are very reactive" [ant: unreactive]

  2. tending to react to a stimulus; "the skin of the geriatric is less reactive than that of younger persons"- Louis Tuft

Wikipedia
Reactive

Reactive may refer to:

  • Generally, capable of having a reaction (disambiguation)
  • Reactive mind
  • Reactivity (chemistry)

Usage examples of "reactive".

THEN Kark Al quickly took down from the rack beside the row of space-suits, a hand-rocket-a small affair whose reactive push was enough to move several people in the void.

Then Kark Al quickly took down from the rack beside the row of spacesuits, a hand-rocket - a small affair whose reactive push was enough to move several people in the void.

Then Kark Al quickly took down from the rack beside the row of spacesuits, a hand-rocket -- a small affair whose reactive push was enough to move several people in the void.

Within this infinite variety of experiences, however, there are two basic paths, which Kabbalah calls proactive and reactive.

Possible complications include Dys thymia depressive neurosis, Major Depression, Psychoactive Substance Abuse, and psychotic disorders such as Brief Reactive Psychosis.

Aluminum was added to an oxide of another, less reactive metal, such as chromium, manganese, vanadium, tungsten, or molybdenum.

The hydronium ions came in a sudden wave, catching the dividing cells off-guard Buffer systems were mobilized to neutralize some of the initial reactive particles, but there were too many to combat.

The racks holding the barrels swayed slightly as I landed and pushed off again, little glowing spits and spats of thick reactive paint spraying behind me as lead chewed the air.

Its underside glowed with reactive paint, and I could see the metal cage on top where the operator would guide the AI deck through manipulating the dangling tentacles of crabhooks to pick up five racks at a time and transport them to the staging area.

It is the breakdown of this regime or the rise of new and as yet unbowed adversaries that leads to the reactive use of force.

The difference is that covalent chlorine is more reactive, it has these big electron clouds that can fuck up your chromosomes.

Dozens of those heretofore un-fucking-heard-of super-Dreadnought ships had turned up when the incursionary force had been expecting no more than a handful - at most - of the standard ones, the models without the reactive mirror armour, the plasma engines and the wideband lasers.

Will is a modifier capable of altering the spatiotemporal activity of the neuronal network by exerting fields of analogue-predilection that become effective via the reactive properties of the vital cortex.

She and Anchee are both covered in dust loaded with highly reactive superoxides that can tear apart any organic molecule.

That they do not have reactive psychoses and do not suffer from psychotic microepisodes under stress.