"concatenations" in the noun sense
the state of being linked together as in a chain union in a linked series
the linking together of a consecutive series of symbols or events or ideas etc
"it was caused by an improbable concatenation of circumstances"
3. chain, concatenation
a series of things depending on each other as if linked together
"the chain of command"
"a complicated concatenation of circumstances"
the act of linking together as in a series or chain
Source: WordNet® (An amazing lexical database of English)
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