12 letters · 14 points in Scrabble
noun the act of putting one thing into another
originFrom Medieval Latin intrōmissiō, intrōmissiōn- (“introduction, admission; usurpation”), intro- (“into”) + missiō (“sending”), from Latin intrōmissus (“sent in, introduced, let in, admitted”), perfect passive participle of intrōmittō (“send in, let in”).
Etymology from Wiktionary, CC BY-SA 3.0