To act on the basis of information received or deduced.(verb)
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Use "act upon" in a sentence
"A comitium might be legislative, and pass laws or plebiscites; judiciary, and hear trials; public, to deal with matters like adoption; electoral, to return magistrates; or religious, to act upon religious matters like voting for priests and augurs."
"In an 1845 communication to the Royal Society, which Darwin, as a Fellow, would quite likely have read, Francis Sibson Esq.* wrote: ‘The muscles that open and close the blow-hole, and that act upon the various sacs, form one of the most complicated yet most exquisitely adjusted pieces of machinery that either nature or art presents.’"
"As I explained earlier page 147, Baby Pace gives babies and toddlers the extra time needed to process and act upon what we are showing, singing, or asking them."