Defn: Porosity. Wiseman.
PORISM
Po"rism, n. Etym: [Gr. porisme.]
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.
PORISMATIC; PORISMATICAL
Po`ris*mat"ic, Po`ris*mat"ic*al, a.
Defn: Of or pertaining to a porism; poristic.
PORISTIC; PORISTICAL
Po*ris"tic, Po*ris"tic*al, a.Etym: [Gr.