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explode (v.)[explode 词源字典]: 1530s (transitive), "to reject with scorn," from Latin explodere "drive out or off by clapping, hiss off, hoot off," originally theatrical, "to drive an actor off the stage by making noise," hence "drive out, reject, destroy the repute of" (a sense surviving in an exploded theory), from ex- "out" (see ex-) + plaudere "to clap the hands, applaud," which is of uncertain origin. Athenian audiences were highly demonstrative. clapping and shouting approval, stamping, hissing, and hooting for disapproval. The Romans seem to have done likewise.
At the close of the performance of a comedy in the Roman theatre one of the actors dismissed the audience, with a request for their approbation, the expression being usually plaudite, vos plaudite, or vos valete et plaudite. [William Smith, "A First Latin Reading Book," 1890]
English used it to mean "drive out with violence and sudden noise" (1650s), later "cause to burst suddenly and noisily" (1794). Intransitive sense of "go off with a loud noise" is from 1790, American English; figurative sense of "to burst with destructive force" is by 1882; that of "burst into sudden activity" is from 1817; of population by 1959. Related: Exploded; exploding.[explode etymology, explode origin, 英语词源]
exploit (n.): late 14c., "outcome of an action," from Old French esploit "a carrying out; achievement, result; gain, advantage" (12c., Modern French exploit), a very common word, used in senses of "action, deed, profit, achievement," from Latin explicitum "a thing settled, ended, or displayed," noun use of neuter of explicitus, past participle of explicare "unfold, unroll, disentangle" (see explicit).

Meaning "feat, achievement" is c. 1400. Sense evolution is from "unfolding" to "bringing out" to "having advantage" to "achievement." Related: Exploits.
exploit (v.): c. 1400, espleiten, esploiten "to accomplish, achieve, fulfill," from Old French esploitier, espleiter "carry out, perform, accomplish," from esploit (see exploit (n.)). The sense of "use selfishly" first recorded 1838, from a sense development in French perhaps from use of the word with reference to mines, etc. (compare exploitation). Related: Exploited; exploiting.
exploitation (n.): 1803, "productive working" of something, a positive word among those who used it first, though regarded as a Gallicism, from French exploitation, noun of action from exploiter (see exploit (v.)). Bad sense developed 1830s-50s, in part from influence of French socialist writings (especially Saint Simon), also perhaps influenced by use of the word in U.S. anti-slavery writing; and exploitation was hurled in insult at activities it once had crowned as praise.
It follows from this science [conceived by Saint Simon] that the tendency of the human race is from a state of antagonism to that of an universal peaceful association -- from the dominating influence of the military spirit to that of the industriel one; from what they call l'exploitation de l'homme par l'homme to the exploitation of the globe by industry. ["Quarterly Review," April & July 1831]
exploitative (adj.): 1882, from French exploitatif, from exploit (see exploit (n.)). Alternative exploitive (by 1859) appears to be a native formation from exploit + -ive.
exploration (n.): 1540s, from Middle French exploration and directly from Latin explorationem (nominative exploratio) "an examination," noun of action from past participle stem of explorare "investigate, examine" (see explore). Alternative explorement is from 1640s.
exploratory (adj.): mid-15c., from Latin exploratorius "belonging to scouts," from explorator "scout," from explorare "investigate, examine" (see explore). Alternative explorative is from 1738; explorational is from 1889.
explore (v.): 1580s, "to investigate, examine," a back-formation from exploration, or else from Middle French explorer (16c.), from Latin explorare "investigate, search out, examine, explore," said to be originally a hunters' term meaning "set up a loud cry," from ex- "out" (see ex-) + plorare "to weep, cry." Compare deplore. Second element also is explained as "to make to flow," from pluere "to flow." Meaning "to go to a country or place in quest of discoveries" is first attested 1610s. Related: Explored; exploring.
explorer (n.): 1680s, agent noun from explore. Replaced earlier exploratour (mid-15c.).
explosion (n.): 1620s, "action of driving out with violence and noise," from French explosion, from Latin explosionem (nominative explosio) "a driving off by clapping," noun of action from past participle stem of explodere "drive out by clapping" (see explode for origin and sense evolution). Meaning "a going off with violence and noise" is from 1660s. Sense of "a rapid increase or development" is first attested 1953.
explosive (adj.): 1660s, "tending to explode," from Latin explos-, past participle stem of explodere "drive out, reject" (see explosion) + -ive. As a noun, from 1874. Related: Explosives (n.); explosively; explosiveness.
exponent (n.): 1706, from Latin exponentem (nominative exponens), present participle of exponere "put forth" (see expound). Earliest use is the mathematical one (said to have been introduced in algebra by Descartes) for the symbol to indicate by what power the base number is to be raised. The sense of "one who expounds" is 1812. As an adjective, from 1580s.
exponential (adj.): 1704, from exponent + -ial. As a noun, from 1784. Related: Exponentially.
export (v.): by 1610s, "carrying out of a place;" perhaps from late 15c., from Latin exportare "to carry out, bring out; send away, export," from ex- "away" (see ex-) + portare "carry" (see port (n.1)). The sense of "send out (commodities) from one country to another" is first recorded in English 1660s. Related: Exported; exporting; exporter.
export (n.): 1680s, from export (v.).
expose (v.): early 15c., "to leave without shelter or defense," from Old French esposer, exposer "lay open, set forth, speak one's mind, explain" (13c.), from Latin exponere "set forth, lay open, exhibit, reveal, publish" (see expound), altered by confusion with poser "to place, lay down" (see pose (v.1)). Meaning "to exhibit openly" is from 1620s; that of "to unmask" is from 1690s. Photographic sense is from 1839. Related: Exposed; exposes; exposing.
expose (n.): also exposé, "display of discreditable information," 1803, initially as a French word; noun use of past participle of French exposer "lay open" (see expose (v.)). Earliest use was in reference to Napoleon.
exposition (n.): late 14c., "explanation, narration," from Old French esposicion "explanation, interpretation" (12c.), from Latin expositionem (nominative expositio) "a setting or showing forth; narration, explanation," noun of action from past participle stem of exponere "put forth; explain; expose" (see expound).

The meaning "public display" is first recorded 1851 in reference to the Crystal Palace Exposition in London. Abbreviation Expo is first recorded 1963, in reference to planning for the world's fair held in Montreal in 1967.
expository (adj.): 1620s, from Medieval Latin expositorius, from exposit-, past participle stem of Latin exponere "set forth" (see expound). Earlier in English as a noun meaning "an expository treatise, commentary" (early 15c.). Related: Expositorial.
expostulate (v.): 1530s, "to demand, to claim," from Latin expostulatus, past participle of expostulare "to demand urgently, remonstrate, find fault, dispute, complain of, demand the reason (for someone's conduct)," from ex- "from" (see ex-) + postulare "to demand" (see postulate (v.)). Friendlier sense of "to reason earnestly (with someone) against a course of action, etc." is first recorded in English 1570s. Related: Expostulated; expostulating.