What is Reactant?
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(re-ak-tent) n. 1: A substance that enters into and is altered in the course of a chemical reaction. 2: The starting material in a chemical reaction.
Power Reactant Storage Assemblies are sets of oxygen and hydrogen tanks that provide reactants for electrical power generation and basic life support to the shuttle crew.
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The real root of this word dates way back to 2001 - and it was mostly used to announce the enterance of a person of high status and/or i..