#1 Am n. [americium, atomic number 95] a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms. wn
#2 Am n. [Master of Arts, MA, Artium Magister, AM] a master's degree in arts and sciences. wn
#3 Am n. [amplitude modulation, AM] modulation of the amplitude of the (radio) carrier wave. wn
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