porism noun.
['pɔ:rɪz(ǝ)m, 'pɒ-] LME.[Late Latin
porisma from Greek, from
porizein find, obtain: see
-ISM.]
Math. In ancient Greek mathematics: a kind of geometrical proposition arising during the investigation of some other proposition, either by immediate deduction (=
COROLLARY noun 1a), or by consideration of some special case in which the first proposition becomes indeterminate.
■ poris'matic
[pɔ:rɪz'matɪk] adjective pertaining to or of the nature of a porism
L18. ■ poristic
[pǝ'rɪstɪk] adjective (now
rare) =
porismatic E18. [TahlilGaran] English Dictionary ▲