9 letters · 14 points in Scrabble
noun a commonsense rule (or set of rules) intended to increase the probability of solving some problem
adjective of or relating to or using a general formulation that serves to guide investigation
originIrregular formation from Ancient Greek εὑρίσκω (heurískō, “I find, discover”) (compare the proper Greek term εὑρετικός (heuretikós)).
Etymology from Wiktionary, CC BY-SA 3.0