concatenation: [17] A concatenation is literally a ‘chain’ of events or occurrences. It is a derivative of the seldom-encountered verb concatenate [16], which comes from Latin concatēnāre ‘chain together, link’, a compound verb formed from the prefix com- ‘together’ and catēna ‘chain’ (source of English chain). => chain[concatenation etymology, concatenation origin, 英语词源]
c. 1600, from Late Latin concatenationem (nominative concatenatio) "a linking together," noun of action from past participle stem of concatenare "to link together," from com- "together" (see com-) + catenare, from catena "a chain" (see chain (n.)).