14 letters · 18 points in Scrabble
noun (philosophy) the doctrine that the meaning of a proposition consists of the operations involved in proving or applying it
originEtymology tree English operational Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Indo-European *-mos Proto-Indo-European *-mós Ancient Greek -μός (-mós) Ancient Greek -ισμός (-ismós)der. English -ism English operationalism From operational + -ism.
Etymology from Wiktionary, CC BY-SA 3.0