A social interaction.
A record of the proceedings of a learned society.
An exchange or trade, as of ideas, money, goods, etc.
A deal or business agreement.
The act of conducting or carrying out (business, negotiations, plans).
The transfer of funds into, out of, or from an account.
An atomic operation; a message, data modification, or other procedure that is guaranteed to perform completely or not at all (e.g. a database transaction).
the quality of being useless