1. The period between midnight and noon
   "She woke up at 3 am to catch her early flight";
   - A.M., a.m., AM

1. (Latin) before 12 noon
   "The meeting is scheduled for 10:00 AM (ante meridiem)";
   - ante meridiem, A.M., a.m., AM

1. A master's degree in arts and sciences
   - Master of Arts, MA, Artium Magister
    
2. Modulation of the amplitude of the (radio) carrier wave
   "AM radio stations use amplitude modulation to transmit their signals";
   - amplitude modulation
    
3. An elected representative in certain legislative bodies, such as state or regional assemblies
   "The AM proposed a new bill to improve local infrastructure";
   - Assembly Member

1. A radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
   - americium, atomic number 95

1. Have the quality of being; (copula, used with an adjective or a predicate noun)
   "John is rich"; "This is not a good answer"
    
2. Be identical to; be someone or something
   "The president of the company is John Smith"; "This is my house"
    
3. Occupy a certain position or area; be somewhere
   "Where is my umbrella?"; "The toolshed is in the back"; "What is behind this behavior?"
    
4. Have reality; have an existence, be extant
   "Is there a God?";
   - exist
    
5. Be identical or equivalent to
   "One dollar is 1,000 rubles these days!";
   - equal
    
6. Form or compose
   "This money is my only income"; "The stone wall was the backdrop for the performance";
   - constitute, represent, make up, comprise
    
7. Work in a specific place, with a specific subject, or in a specific function
   "He is a herpetologist"; "She is our resident philosopher";
   - follow
    
8. Represent, as of a character on stage
   "Derek Jacobi was Hamlet";
   - embody, personify
    
9. Spend or use time
   "I may be an hour"
    
10. Have life, be alive
    "Our great leader is no more";
    - live
     
11. To remain unmolested, undisturbed, or uninterrupted — used only in infinitive form
    "let her be"
     
12. Be priced at
    "That table is £100";
    - cost

Derived forms: ams, AMs

Type of: bear on, concern, have to do with, master's degree, metal, metallic element, modulation, occupy, period, period of time, pertain, refer, relate, remain, represent, rest, stand for, stay, symbol [archaic], symbolise [Brit], symbolize, take, time period, time span, touch, touch on, typify, use up, work

Antonym: differ

Encyclopedia: Am, Antes del Mediodía