Library / English Dictionary

    ACTIVATION ENERGY

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    The energy that an atomic system must acquire before a process (such as an emission or reaction) can occurplay

    Example:

    catalysts are said to reduce the energy of activation during the transition phase of a reaction

    Synonyms:

    activation energy; energy of activation

    Classified under:

    Nouns denoting natural phenomena

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

    energy; free energy ((physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs)

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