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• Nb
  Nb

  niobium.
• NB
  NB

  abbreviation

  enby.
• nb
  nb

  abbreviation

  no ball
• N.B.
  N.B.

  An abbreviation for the Latin phrase nota bene, meaning “note well.” It is used to emphasize an important point.

Nb

¹ American  

Symbol, Chemistry.

1. niobium.

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NB ² American  

abbreviation

1. enby.

2. nonbinary.

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NB ³ American  

Or N.B.

abbreviation

1. New Brunswick, Canada (approved for postal use).

2. nota bene.

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NB ¹ British  

abbreviation

1. nota bene

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Nb ² British  

symbol

1. niobium

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NB ³ British  

abbreviation

1. New Brunswick

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nb ⁴ British  

abbreviation

1. no ball

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N.B. Cultural  

1. An abbreviation for the Latin phrase nota bene, meaning “note well.” It is used to emphasize an important point.

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Etymology

Origin of NB

Latin: note well

Example Sentences

NB Spotify did not provide data for Belfast.

From BBC • Feb. 21, 2026

Premiering today in Sundance‘s U.S. Dramatic Competition is “Run Amuk,” the feature debut from writer-director NB Mager.

From Los Angeles Times • Jan. 26, 2026

Instead, his droll NB skewered pomposity in its many forms.

From New York Times • May 22, 2023

Over 82,000 customers in the province of Prince Edward Island, about 95%, also lost power, while NB Power in New Brunswick reported 44,329 were without electricity.

From Seattle Times • Sep. 24, 2022

NB: Youngest son currently at home, seriously ill, Ministry inspectors have confirmed.

From "Harry Potter and the Deathly Hallows" by J.K. Rowling