m 3 e 1 r 1 c 3 e 1 r 1 i 1 z 10 e 1
9 letters · 22 points in Scrabble
Meaning
verb treat to strengthen and improve the luster
originFrom Mercer + -ize, named after John Mercer of Great Harwood, Lancashire, who invented the process in the mid-19th century.
Etymology from Wiktionary, CC BY-SA 3.0