1883, from concentrate (v.).
1630s, "to bring or come to a common center," from concenter (1590s), from Italian concentrare, from Latin com "with, together" (see com-) + centrum "center" (see center (n.)). Meaning "condense" is from 1680s. Sense of "mentally focus" is c. 1860. Related: Concentrated; concentrating.
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