It forms all or part of: and; atoll; dysentery; embargo; embarrass; embryo; empire; employ; en- (1) "in; into;" en- (2) "near, at, in, on, within;" enclave; endo-; enema; engine; enoptomancy; enter; enteric; enteritis; entero-; entice; ento-; entrails; envoy; envy; episode; esoteric; imbroglio; immolate; immure; impede; impend; impetus; important; impostor; impresario; impromptu; in; in- (2) "into, in, on, upon;" inchoate; incite; increase; inculcate; incumbent; industry; indigence; inflict; ingenuous; ingest; inly; inmost; inn; innate; inner; innuendo; inoculate; insignia; instant; intaglio; inter-; interim; interior; intern; internal; intestine; intimate (adj.) "closely acquainted, very familiar;" intra-; intricate; intrinsic; intro-; introduce; introduction; introit; introspect; invert; mesentery.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit antara- "interior;" Greek en "in," eis "into," endon "within;" Latin in "in, into," intro "inward," intra "inside, within;" Old Irish in, Welsh yn, Old Church Slavonic on-, Old English in "in, into," inne "within, inside."
early 15c., "tenure of a pope;" 1680s, "time during which a pontifical office is held by a particular incumbent," from Old French pontificat and directly from Latin pontificatus "office of a pontiff," from pontifex (see pontifex).
"a support, a rigid thing used to sustain an incumbent weight" (usually applied to something not forming a part of the object supported), mid-15c., proppe, probably from Middle Dutch proppe "vine prop, support; stop for a bottle," a word of unknown origin. Probably related to Old High German pfropfo, German pfropfen "to prop," which are perhaps from Latin propago "a set, layer of a plant" (see propagation). Irish propa, Gaelic prop are said to be borrowed from English.
1550s, Liturgy, "the service of the Holy Eucharist," from French liturgie (16c.) or directly from Late Latin/Medieval Latin liturgia "public service, public worship," from Greek leitourgia "a liturgy; public duty, ministration, ministry," from leitourgos "one who performs a public ceremony or service, public servant," from leito- "public" (from laos "people;" compare leiton "public hall," leite "priestess;" see lay (adj.)) + -ourgos "that works," from ergon "work" (from PIE root *werg- "to do"). Meaning "collective formulas for the conduct of divine service in Christian churches" is from 1590s. Related: Liturgist; liturgics.
In ancient Greece, particularly at Athens, a form of personal service to the state which citizens possessing property to a certain amount were bound, when called upon, to perform at their own cost. These liturgies were ordinary, including the presentation of dramatic performances, musical and poetic contests, etc., the celebration of some festivals, and other public functions entailing expense upon the incumbent; or extraordinary, as the fitting out of a trireme In case of war. [Century Dictionary]