early 15c., manumitten, "set (a slave or captive) free," from Latin manumittere "to release from one's power, set at liberty, emancipate," literally "to send from one's 'hand'" (i.e. "control"), from the phrase manu mittere "release from control," from manu, ablative of manus "power of a master," literally "hand" (from PIE root *man- (2) "hand") + mittere "let go, release" (see mission). Related: Manumitted; manumitting. Alternative form manumiss, manumise was sometimes used 16c.-19c.
"the entire scenery and properties of a stage play," 1830, from French mise en scène, literally "setting on the stage," from mise (13c.) "a putting, placing," noun use of fem. past participle of mettre "to put, place," from Latin mittere "to send" (see mission). Hence, figuratively, "the surroundings of an event" (1872).
late 14c., "to place (oneself) under the control of another, to yield oneself," from Latin submittere "to yield, lower, let down, put under, reduce," from sub "under" (see sub-) + mittere "let go, send" (see mission). Transitive sense of "refer to another for consideration" first recorded 1550s. Related: Submitted; submitting.
1610s, "allowable," from French admissible, from past-participle stem of Latin admittere "allow to enter, admit, give entrance," from ad "to" (see ad-) + mittere "let go, send" (see mission). The meaning "capable of being allowed entrance" is from 1775; the specific sense of "capable of being used in a legal decision or judicial investigation" is by 1849.