(biblical) Any one of the New Testament Epistles of James, 1 and 2 Peter, 1 John, Jude, and sometimes 2 and 3 John, which are not addressed to specific individuals or Churches.

(physics) The interaction of electron spins with heat currents within magnetic materials.

(botany) any of the flowering plants of the genus Sida in the mallow family

Alternative form of manboy