or Centre, in a general sense, signifies a point equally distant from the extremities of a line, figure, or body. The word is formed from the Greek κέντρον, a point.

Center of Gravity, in mechanics, that point about which all the parts of a body do in any situation exactly balance each other.

Center of Motion, that point which remains at rest, while all the other parts of a body move about it.

Center of a Sphere, a point in the middle, from which all lines drawn to the surface are equal.

Hermes Trismegistus defines God an intellectual sphere, whose center is everywhere, and circumference nowhere.

CENTESIMA usura, that wherein the interest in an hundred months became equal to the principal; i.e. where the money is laid out at one per cent. per month; answering to what in our style would be called 12 per cent. for the Romans reckoned their interest not by the year, but by the month.