7 letters · 9 points in Scrabble
adjective (weapons) deriving destructive energy from the release of atomic energy
adjective of or relating to or constituting the nucleus of an atom
adjective of or relating to or constituting the nucleus of a cell
originFrom Latin nū̆cleus, a contraction of the adjective nuculeus, masculine of feminine nuculea (“pertaining to a small nut”) from nucula + adjectival suffix -eus, -ea, -eum. The Latin nucula + -āris adds up to nuculāris, a term that in English becomes nucular; the Latin nuculea + -āris, becomes Latin nuculeāris (“relative to what pertains to small nut”), later contracted into nuclear. By surface…
Etymology from Wiktionary, CC BY-SA 3.0