AM
調幅
Am
n 1: a radioactive transuranic metallic element; discovered by
bombarding uranium with helium atoms [syn: americium,
atomic number 95]
2: a master's degree in arts and sciences [syn: Master of Arts,
MA, Artium Magister]
3: modulation of the amplitude of the (radio) carrier wave
[syn: amplitude modulation]
a.m.
adj : before noon [syn: ante meridiem]
adv : before noon; "let's meet at 11 A.M." [syn: ante meridiem]