exponent

Part of speech: noun

One who or that which explains or expounds.

Part of speech: noun

Alg. A symbol indicating a power.

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Usage examples "exponent":

  1. Where the hopefulness of the others was intermittent his was constant; his knowledge of the English situation generally, as well as of the lie of forces in the Markborough district, was greater than theirs; and his ability as a writer made him their natural exponent. - "The Case of Richard Meynell", Mrs. Humphrey Ward.
  2. But they all united in the ultimate essential, and this was put by a great exponent of the best known school of etiquette, the Ogasawara, in the following terms: " The end of all etiquette is to so cultivate your mind that even when you are quietly seated, not the roughest ruffian can dare make onset on your person." - "Bushido, the Soul of Japan", Inazo Nitobé.
  3. Beauty itself is but one of the forms of truth, and nature is our finite exponent of infinite truth. - "Peg Woffington", Charles Reade.