Meaning of CALCULUS in English

n. (pl. calculuses or calculi)

1. Math. a a particular method of calculation or reasoning (calculus of probabilities). b the infinitesimal calculuses of integration or differentiation (see integral calculus, differential calculus).

2 Med. a stone or concretion of minerals formed within the body.


calculous adj. (in sense 2).

Etymology: L, small stone used in reckoning on an abacus

Oxford English vocab.      Оксфордский английский словарь.