c. 1600, "that which supplies a want or need," from French accommodation, from Latin accommodationem (nominative accommodatio) "an adjustment," noun of action from past-participle stem of accommodare "make fit; make fit for" (see accommodate). Meaning "appliance, anything which affords aid" is from 1610s; that of "act of accommodating" is from 1640s. Meaning "arrangement of a dispute" is from 1640s. An accommodation train (1838) was one making all stops (as opposed to an expresss); it was used earlier of stages (1811).
1530s, "fit one thing to another," from Latin accomodatus "suitable, fit, appropriate to," past participle of accomodare "make fit, make fit for, adapt, fit one thing to another," from ad "to" (see ad-) + commodare "make fit," from commodus ""proper, fit, appropriate, convenient, satisfactory," from com-, here as an intensive prefix (see com-), + modus "measure, manner" (from PIE root *med- "take appropriate measures"). From late 16c. as "make suitable," also "furnish (someone) with what is wanted," especially "furnish with suitable room and comfort" (1712). Related: Accommodated; accommodating.
1620s, "an embrace about the neck then the tapping of a sword on the shoulders to confer knighthood," from French accolade "an embrace, a kiss" (16c.), from Provençal acolada or Italian accollata, ultimately from noun use of a fem. past participle of Vulgar Latin *accollare "to embrace around the neck," from Latin ad "to" (see ad-) + collum "neck" (compare collar (n.)), from PIE root *kwel- (1) "revolve, move round." Also see -ade. The extended meaning "praise, award" is by 1851. The earlier form of the word in English was accoll (mid-14c.), from Old French acolee "an embrace, kiss, especially that given to a new-made knight," a noun use of the past participle of the verb acoler. The French noun in the 16c. was altered to accolade, with the foreign suffix, and English followed suit.
"upward slope of ground," 1610s, from Latin acclivitatem (nominative acclivitas) "an ascending direction, rising grade, upward steepness," from acclivis "mounting upwards, ascending," from ad "to, up to" (see ad-) + clivus "hill, a slope" (from PIE *klei-wo-, suffixed form of root *klei- "to lean").
in geology, "leaning against," as one stratum of rock against another, both turned up at an angle, 1837, from Latin acclinis "leaning on or against," related to acclinare "to lean on or against," from assimilated form of ad "to, upon" (see ad-) + clinare "to bend" (from PIE *klein-, suffixed form of root *klei- "to lean").