INFINITESIMAL a. 2 definitions
Infinitely or indefinitely small; less than any assignable quantity or value; very small. Infinitesimal calculus, the different and the integral calculus, when developed according to the method used by Leibnitz, who regarded the increments given to variables as infinitesimal.
KNOCK v.
down; to fell; to prostrate by a blow or by blows; as, to knock down an assailant. (b) To assign to a bidder at an auction, by a blow or knock; to knock off. -- To knock in the head, or on the head, to stun or kill by a blow upon the head; hence, to put am end to; to defeat, as a scheme or project; to frustrate; to qu…