array (n.) Look up array at Dictionary.com
mid-14c., "order, arrangement," from Anglo-French arrai, Old French aroi, from areer "to put in order" (see array (v.)).
array (v.) Look up array at Dictionary.com
early 14c., from stem of Old French areer "to put in order," from Vulgar Latin *ar-redare (source of Italian arredare), from Latin ad- "to" (see ad-) + Frankish *ræd- "ready" or some cognate Germanic source, from Proto-Germanic *raidjan "to place in order" (cognates: Gothic garadis, Old English geræde "ready;" see ready (adj.)). Related: Arrayed; arraying.