adjutoryn.adj.

Etymology: Partly (i) < classical Latin adiūtōrium help, assistance, support, in post-classical Latin also medicinal preparation, remedy (4th cent.; < adiūt- , past participial stem of adiūvāre to help (see adjuvant adj.) + -ōrium -ory suffix¹); partly (ii) < post-classical Latin adiutorium bone of the arm (short for os adiutorium ; both late 13th cent. in Lanfranc; < classical Latin os bone (see os n.¹) + post-classical Latin adiutorium , neuter of adiutorius < classical Latin adiūt- , past participial stem of adiūvāre to help + -ōrius -ory suffix¹; see further note below); and partly (iii) (in use as adjective) < classical Latin adiūt- (see above) + -ory suffix². With use as noun compare Anglo-Norman adjutorie, ajutorie, Middle French adjuctoire, Anglo-Norman and Middle French, French †adjutoire help, succour (first half of the 12th cent. in Anglo-Norman), treatment, remedy (13th cent.), humerus (last third of the 15th cent. in various translations of Chauliac), and also Old Occitan aitori, ajutori, adjutori, etc. (1080), Catalan adjutori (13th cent.), Spanish †adjutorio (a1428), Italian †aiutorio (second half of the 12th cent.), †adiutorio (13th or 14th cent.), all in sense ‘help, succour, assistance’. With use as adjective compare Old French, Middle French adjutoire that helps (13th cent.).The post-classical Latin name of the various bones in sense A. is after similar use of Arabic ʿaḍud ‘help, succour, person who helps’ in medical contexts. It is unclear whether the following quot. shows an attestation of the post-classical Latin noun in sense ‘bone of the arm’ in a Middle English context, or a borrowing of the Latin noun without omission of the ending:a1400 tr. Lanfranc Sci. Cirurgie (Ashm.) (1894) 155 Adiutorium..is oon boon sumwhat crokid, greet & holowe..& þe round extremite of þis boon entriþ into þe holownes of þe spawde [L. Intrat extremitas ossis adiutorii: quod quidem est os vnum grossum: & aliquantum curuum multum concauum].