[count] law :a formal statement that someone who has promised to tell the truth makes so that the statement can be used in court especially; :a formal statement that is made before a trial by a witness who will not be present at the trial

[noncount] technical :the action of depositing something (such as sand, snow, or mud) on a surface or area especially over a period of time

[count, noncount] formal :the act removing someone from a powerful position :the act of deposing someone