# a.m.

Pronunciation: say "ay EM" /ˌeɪ ˈɛm/

## Adverb

1. During the first half of the day, from midnight to noon, when telling time on a 12-hour clock.
   - Simple: In the morning hours from midnight until noon, on a 12-hour clock.
   - _The bakery opens at 5 a.m. to start the day's bread._
   - _Her flight was delayed until almost 2 a.m. by the storm._

## Adjective

2. Initialism of ad modum. — Initialism of ad modum.
   - Simple: Initialism of ad modum. It is a short Latin label meaning "in the manner of."

## Origin

An abbreviation of the Latin ante meridiem, meaning "before noon."

Source: DictionaryAI, https://dictionaryai.com/define/a.m. (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).