Approval. All approvals by the Federal Emergency Management Agency (FEMA) as grantor agency required under the regulations in this part mean prior approval in writing signed by an authorized FEMA official. When failure to obtain prior approval of an action has not resulted and is not expected to result in any failure of compliance with a substantive requirement, and approval after the fact is not contrary to law (or regulation having the effect of law), written approval after the fact may be granted at the discretion of the authorized official.
44 CFR § 302.2
Except as otherwise stated or clearly apparent by context, the definitions ascribed in this section to each of the listed terms shall constitute their meaning when used in the regulations in this part. Terms not defined in this part shall have the meaning set forth in their definition, if any, in the Federal Civil Defense Act of 1950, as amended.