| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024am /æm; unstressed əm, m/USA pronunciation v. - 1st pers. sing. pres. indic. of be.
AM, an abbreviation of:- Electronicsamplitude modulation, a method of sending a signal on a radio wave.
- Radio and Televisiona system of broadcasting using this method.
Compare FM.-am-, root. - -am- comes from Latin, where it has the meaning "love, like.'' This meaning is found in such words as: amiable, amorous, amour, paramour.
-am-, root. - -am- comes from Latin, where it has the meaning "take out;
come out''. This meaning is found in such words as: example, sample.
Am., an abbreviation of:- Place NamesAmerica.
- Place NamesAmerican.
A.M., an abbreviation of- Latin Artium Magister: Master of Arts.
a.m. or A.M.,an abbreviation of Latin ante meridiem:- Timebefore noon (used with hours of a day).
- Timethe period from midnight to noon, esp. the period of daylight prior to noon.
Compare p.m. WordReference Random House Unabridged Dictionary of American English © 2024am (am; unstressed əm, m),USA pronunciation v. - 1st pers. sing. pres. indic. of be.
- Indo-European *Hes- be + *-m 1st pers. singular + *-i now; compare is
- before 900; Middle English; Old English am, eam, eom; cognate with Gothic im, Old Norse, Armenian em, Old Irish am, Greek eimí, Hittite, early Lithuanian esmi, Old Church Slavonic yesmĭ, Albanian jam, Sanskrit asmi
- AbbreviationsAsian Male.
- Electronicsamplitude modulation: a method of impressing a signal on a radio carrier wave by varying its amplitude.
- Radio and Televisiona system of broadcasting by means of amplitude modulation.
- Radio and Televisionof, pertaining to, or utilizing such a system. Cf. FM
Am, [Symbol, Chem.]- Chemistryamericium.
Am., - Place NamesAmerica.
- Place NamesAmerican.
A/m, - Electricityampere per meter.
A.M., - Timea.m.
- Master of Arts.
a.m., - Timebefore noon.
- Timethe period from midnight to noon, esp. the period of daylight prior to noon:Shall we meet Saturday a.m.?
- a morning newspaper, sometimes issued shortly before midnight. Cf. p.m.
L ante merīdiem] The abbreviation a.m. for Latin ante meridiem, meaning "before noon,'' refers to the period from midnight until noon. One minute before noon is 11:59 a.m. One minute after noon is 12:01 p.m. Many people distinguish between noon and midnight by saying 12 noon and 12 midnight. Expressions combining a.m. with morning (6 a.m. in the morning) and p.m. with afternoon, evening, or night (9 p.m. at night) are redundant and occur most often in casual speech and writing. Both a.m. and p.m. sometimes appear in capital letters, especially in printed matter.
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