- anaA collection of things associated with a person or place, especially a personal collection of anecdotes or conversations at table
- anagramA word or phrase that is created by rearranging the letters of another word or phrase.
- āāPrescription notation: The stated amount of each of the substances is to be used in the compounding of the prescription
- anacharisAny freshwater weed of genus Elodea in the frog's-bit family (Hydrocharitaceae), native to America; the waterweed or water thyme.
- anaplerosisThe replenishment of a deficiency, or refilling of the space left by a destroyed part.
- anapleroticForming intermediates of a metabolic pathway (eg. the tricarboxylic acid cycle).
- anapoiesisRecreation.
- anatopismA thing that is out of its proper place; the geographic counterpart to anachronism.