Words that rhyme with allum

n 1: a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum [syn: alum, ammonia alum, ammonium alum] 2: a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum [syn: alum, potassium alum, potash alum] 3: a person who has received a degree from a school (high school or college or university) [syn: alumnus, alumna, alum, graduate, grad] 4: a double sulphate of aluminum and potassium that is used as an astringent (among other things)