Nb

1 of 2

symbol

niobium

NB

2 of 2

abbreviation

1

New Brunswick

2

nonbinary

Including gender on the card is optional and will be marked with an "F" for female, "M" for male, "NB" for non-binary—people who do not identify with one gender—and "X" if the person chooses not to include gender.

—Michaelle Bond

3

northbound

4

usually N.B. nota bene

Note: N.B. is used in writing to indicate that something is important, and that the reader should take notice of it.

In performing other offices of the toilet, she half-directed, half-aided me, without the least display of temper or impatience. N.B.—That was the first and last time I was required to dress her.

—Charlotte Brontë

Medical Definition

Nb

1 of 2 symbol

niobium

NB

2 of 2 abbreviation

newborn