7 letters · 15 points in Scrabble
verb cause to become stonelike or stiff or dazed and stunned
verb change into stone
verb make rigid and set into a conventional pattern
originFrom Middle French pétrifier, from Medieval Latin petrificāre, from Latin petra (“rock”), from Ancient Greek πέτρα (pétra, “rock”) + -ficāre, from facere (“do, make”), equivalent to petro- + -ify.
Etymology from Wiktionary, CC BY-SA 3.0