hospitalyoudaoicibaDictYouDict[hospital 词源字典]
hospital: [13] Like hospices, hostels, and hotels, hospitals were originally simply places at which guests were received. The word comes via Old French hospital from medieval Latin hospitāle, a noun use of the adjective hospitālis ‘of a guest’. This in turn was derived from hospit-. the stem of Latin hospes ‘guest, host’.

In English, hospital began its semantic shift in the 15th century, being used for a ‘home for the elderly or infirm, or for down-and-outs’; and the modern sense ‘place where the sick are treated’ first appeared in the 16th century. The original notion of ‘receiving guests’ survives, of course, in hospitality [14] and hospitable [16]. Hospice [19] comes via French from Latin hospitium ‘hospitality’, another derivative of hospes.

=> hospice, hospitable, host, hostel, hotel[hospital etymology, hospital origin, 英语词源]
hospitable (adj.)youdaoicibaDictYouDict
1560s, from Middle French hospitable, from Latin hospitari "be a guest," from hospes (genitive hospitis) "guest" (see host (n.1)). Related: Hospitably.
hospital (n.)youdaoicibaDictYouDict
mid-13c., "shelter for the needy," from Old French hospital, ospital "hostel" (Modern French hôpital), from Late Latin hospitale "guest-house, inn," neuter of Latin adjective hospitalis "of a guest or host," from hospes (genitive hospitis); see host (n.1). Later "charitable institution to house and maintain the needy" (early 15c.); sense of "institution for sick people" is first recorded 1540s.
hospitality (n.)youdaoicibaDictYouDict
late 14c., "act of being hospitable," from Old French hospitalité, from Latin hospitalitem (nominative hospitalitas) "friendliness to guests," from hospes (genitive hospitis) "guest" (see host (n.1)).
hospitalization (n.)youdaoicibaDictYouDict
1873, noun of action from hospitalize.
hospitalize (v.)youdaoicibaDictYouDict
1873, from hospital + -ize. "Freq[uently] commented on as an unhappy formation" [OED]. Related: hospitalized; hospitalizing.
inhospitable (adj.)youdaoicibaDictYouDict
1560s, from Middle French inhospitable (15c.), from Medieval Latin inhospitabilis (equivalent of Latin inhospitalis), from in- "not" (see in- (1)) + Medieval Latin hospitabilis (see hospitable).
hospitalleryoudaoicibaDictYouDict
"A member of a charitable religious order, originally the Knights Hospitaller", Middle English: from Old French hospitalier, from medieval Latin hospitalarius, from hospitale (see hospital).