For the purposes of sections 105.600 to 105.650 the following words and phrases have the meanings ascribed to them in this section:
(1) "Receiving agency", any department or agency of the federal government or a state government which receives an employee of another government under sections 105.600 to 105.650;
(2) "Sending agency", any department or agency of the federal government or a state government which sends any employee thereof to another government agency under sections 105.600 to 105.650.