WordWeight : Weighing the Words

Pronunciation : Po"rism
Part of Speech : n.
Etymology : [Gr. porisme.]
Definition : 1. (Geom.)

Defn: A proposition affirming the possibility of finding such conditions as will render a certain determinate problem indeterminate or capable of innumerable solutions. Playfair.

2. (Gr. Geom.)

Defn: A corollary. Brande & C.

Note: Three books of porisms of Euclid have been lost, but several attempts to determine the nature of these propositions and to restore them have been made by modern geometers.
Source : Webster's Unabridged Dictionary, 1913