late 14c., "to spread" (one's fame), "to show plainly," from manifest (adj.) or else from Latin manifestare "to discover, disclose, betray." Meaning "to display by actions" is from 1560s; reflexive sense, of diseases, etc., "to reveal as in operation" is from 1808. Related: Manifested; manifesting.
1833 in the military sense of "prepare for active operation or taking the field;" 1838 as "render capable of movement;" 1846 as "bring into readiness or circulation," from French mobiliser, from mobile "movable" (see mobile (adj.)). Related: Mobilized; mobilizing.
"act of flaying, operation of stripping off the skin," hence "act or process of abrading, removal of the outer layers of the skin," mid-15c., excoriacioun, from Medieval Latin excoriationem (nominative excoriatio), noun of action from past-participle stem of Late Latin excoriare (see excoriate).