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activate verb (activated, activating) 1 to make something start working or go into operation. 2 to increase the energy of something. 3 to make (a material) radioactive. 4 to increase the speed of or to cause (a chemical reaction). 5 to increase the capacity of (carbon or charcoal) to absorb impurities, especially gases. 6 to increase the biological activity of (sewage) by treatment with air and bacteria. activation noun. activator noun.
ETYMOLOGY: 17c: active + -ate1.
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Chambers Biographical Dictionary
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Consult Chambers 21st Century Dictionary, The Chambers Thesaurus (1996) or Chambers Biographical Dictionary (1997 edition with amendments). Enter your search and choose your title from the drop-down menu.
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