What is Presidential Reserve Call-up?
Presidential Reserve Call-up meaning in Military terminology / glossary / dictionary is:
Provision of a public law (Title 10, United States Code, Section 12304) that provides the President a means to activate, without a declaration of national emergency, not more than 200,000 members of the Selected Reserve and the Individual Ready Reserve (of whom not more than 30,000 may be members of the Individual Ready Reserve), for not more than 365 days to meet the requirements of any operational mission, other than for disaster relief or to suppress insurrection. Also called PRC. See also Individual Ready Reserve; mobilization; Selected Reserve.
Source: JP 4-05