Fla. Stat. § 518.10

For the purpose of ss. 518.11-518.14, a “fiduciary” is defined as an executor, administrator, trustee, guardian (except any guardian holding funds received from or currently in receipt of funds from the United States Department of Veterans Affairs, to the extent of those funds alone), or other person, whether individual or corporate, who by reason of a written agreement, will, court order, or other instrument has the responsibility for the acquisition, investment, reinvestment, exchange, retention, sale, or management of money or property of another.