Definition of calculus
- … even political conservatives agree that an economic calculus must give way to a strategic consciousness when national or global security is at stake.
- —Stephen H. Schneider
by my calculus the more efficient air conditioner will have paid for itself within a span of five years
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In Latin calculus meant “pebble.” Because the Romans used pebbles to do addition and subtraction on a counting board, the word became associated with computation. Other English derivatives include calculator and calculation. Calculus itself has been borrowed into English as a medical term that refers to masses of matter in the body such as kidney stones (a straightforward extension of the meaning “pebble”) and to refer to a system of mathematical computation.
: an advanced branch of mathematics that deals mostly with rates of change and with finding lengths, areas, and volumes
What made you want to look up calculus? Please tell us where you read or heard it (including the quote, if possible).
investment of mental or emotional energy
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