A.M.

/'ei'em/

Thân thiện

Definition

1. Adverb:

   • Before noon, in the morning: Used after a time to indicate that it is a time between midnight (12:00) and noon (11:59). It is the period from 12:00 midnight to 11:59 in the morning.

2. Adjective:

   • Occurring before noon: Describing an event or time that happens in the morning, before 12:00 noon.

Examples of Usage

• Adverb:

  • The meeting is scheduled for 9:00 a.m.
  • The store opens at 7:30 a.m. every day.

• Adjective:

  • The a.m. hours are usually quieter.
  • She prefers a.m. flights for travel.

Advanced Usage

• "12 a.m.": Refers to midnight, the start of the day.

  • The deadline is 12 a.m. on Friday. (Meaning Friday begins at that moment).

• In formal/technical contexts: Often written in the lowercase forms "a.m." or "am", and sometimes without periods as "am".

  • The experiment ran from 6 am to 11 a.m.

Variants and Related Words

• ante meridiem: The full Latin phrase from which "a.m." is derived, meaning "before midday".
• AM: A common capitalized variant, especially in digital displays.
  • The clock read 10:15 AM.

Synonyms

• Morning: The early part of the day, from sunrise to noon.
• Forenoon: A somewhat formal term for the part of the day before noon.

Notes on Usage

• Capitalization: Can be written in uppercase (A.M.), lowercase (a.m.), or small capitals. Consistency within a document is key.
• Punctuation: Traditionally uses periods (a.m.), but the periods are often omitted in informal or digital contexts (am).
• With "12": "12 a.m." specifically denotes midnight. To avoid confusion, "midnight" is often used instead.
• Spacing: Typically, a space is used between the time number and "a.m." (e.g., 10 a.m.), though writing it without a space (10am) is also common.
• Opposite: The opposite period is p.m. (post meridiem), meaning "after noon".

Học thuật

Adverb

1. before noon
   • let's meet at 11 A.M.

Adjective

1. before noon

Từ đồng nghĩa

• ante meridiem
• A.M.