词源 |
concentrate v.1630s, "to bring or come to a common center," from concenter (1590s), from Italian concentrare, from assimilated form of Latin com "with, together" (see con-) + centrum "center" (see center (n.)). Meaning "condense" is from 1680s; that of "intensify the action of" is from 1758. Sense of "mentally focus" is from 1860s, on the notion of "concentrate the mind or mental powers." Related: Concentrated; concentrating. concentrate n. "that which has been reduced to a state of purity," 1883, from concentrate(adj.) "reduced to a pure or intense state" (1640s), from concentrate (v.). updated on October 13, 2021 |