nan

noun4

1. •
   (UK, Australia) Synonym of grandmother.

   • We had my nan over for Christmas dinner.
2. •
   (UK) Synonym of nursemaid.
3. •
   (no longer used) Synonym of maid: a servant girl.
4. •
   (slang, no longer used) Synonym of nancy: an effeminate male homosexual.

noun3

1. •
   A province of Thailand.
2. •
   The capital of Nan Province, Thailand.
3. •
   radiotelephony clear-code word for the letter N.

noun1

1. •
   NMDA antagonist neurotoxicity.

noun1

1. •
   Acronym of not a number, applied to numeric values that represent an undefined or unrepresentable value, such as zero divided by itself.