Definition, Meaning, Synonyms & Anagrams | English word REACT

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Definitions of REACT

1. (intransitive) To act in response.
2. (transitive, now, rare) To act or perform a second time; to do over again; to reenact. [from 17th c.]
3. (physics, intransitive) To return an impulse or impression; to resist the action of another body by an opposite force
4. (chemistry, intransitive) To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.
5. (chemistry, transitive) To cause chemical agents to react; to cause one chemical agent to react with another.
6. (internet, intransitive) To post a reaction (icon or emoji indicating how one feels about a posted message).
7. (Internet) An emoji used to express a reaction to a post on social media.

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Examples of Using REACT in a Sentence

• Acids form aqueous solutions with a sour taste, can turn blue litmus red, and react with bases and certain metals (like calcium) to form salts.
• Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
• Catalysts generally react with one or more reactants to form intermediates that subsequently give the final reaction product, in the process of regenerating the catalyst.
• In typical CVD, the wafer (substrate) is exposed to one or more volatile precursors, which react and/or decompose on the substrate surface to produce the desired deposit.
• A kite is a tethered heavier-than-air or lighter-than-air craft with wing surfaces that react against the air to create lift and drag forces.
• When halogens react with metals, they produce a wide range of salts, including calcium fluoride, sodium chloride (common table salt), silver bromide and potassium iodide.
• Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds.
• Pure nickel is chemically reactive, but large pieces are slow to react with air under standard conditions because a passivation layer of nickel oxide forms on the surface that prevents further corrosion.
• Neutralization (chemistry), a chemical reaction in which an acid and a base react quantitatively with each other.
• This carbohydrate can react with water (hydrolysis) using amylase enzymes as catalyst, which produces constituent sugars (monosaccharides or oligosaccharides).
• Mammalian hosts react to infections with an innate response, often involving inflammation, followed by an adaptive response.
• Gases dissolve, diffuse, and react according to their partial pressures but not according to their concentrations in gas mixtures or liquids.
• Calcium carbonate is the active ingredient in agricultural lime and is produced when calcium ions in hard water react with carbonate ions to form limescale.
• Proposed fusion reactors generally use heavy hydrogen isotopes such as deuterium and tritium (and especially a mixture of the two), which react more easily than protium (the most common hydrogen isotope) and produce a helium nucleus and an energized neutron, to allow them to reach the Lawson criterion requirements with less extreme conditions.
• Chiral derivatizing agent, a type of chemical designed to react with enantiomers to indicate the enantiopurity.
• When it is a player's turn to act, the first verbal declaration or action they take binds them to their choice of action; this rule prevents a player from changing their action after seeing how other players react to their initial action.
• It includes replicating the equations that govern how aircraft fly, how they react to applications of flight controls, the effects of other aircraft systems, and how the aircraft reacts to external factors such as air density, turbulence, wind shear, cloud, precipitation, etc.
• There, it is described that the gods were speechless and devastated at the death of Baldr, unable to react due to their grief.
• Practical design of combinational logic systems may require consideration of the finite time required for practical logical elements to react to changes in their inputs.
• Henlopen Acres' municipal government generally maintains amicable relations with the government of Rehoboth Beach, follows Sussex County's lead on how to react to emergencies such as major storms and whether or not to evacuate in the face of them.

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