a collection of miscellaneous information about a particular subject, person, place, or thing.
an item in such a collection, as an anecdote, a memorable saying, etc.
(of ingredients in pharmaceutical prescriptions) in equal quantities; of each. Symbol: a̅a̅, āa.
a prefix in loanwords from Greek, where it means “up,” “against,” “back,” “re-”: anabasis; used in the formation of compound words: anacardiaceous.
a suffix that forms collective nouns denoting an assembly of items, as household objects, art, books, or maps, or a description of such items, as a bibliography, all of which are representative of or associated with the place, person, or period named by the stem: Americana; Shakespeareana; Victoriana.