1. 
2. 
3. 
[syn: chain, concatenation]
4.  the act of linking together as in a series or chain; 
The Collaborative International Dictionary of English v.0.48:
Concatenation \Con*cat`e*na"tion\ (-n[=a]"sh[u^]n), n. [L.
   concatenatio.]
   A series of links united; a series or order of things
   depending on each other, as if linked together; a chain, a
   succession.
   [1913 Webster]
         The stoics affirmed a fatal, unchangeable concatenation
         of causes, reaching even to the illicit acts of man's
         will.                                    --South.
   [1913 Webster]
         A concatenation of explosions.           --W. Irving.
   [1913 Webster]
WordNet (r) 3.0 (2006):
concatenation
    n 1: the state of being linked together as in a chain; union in
         a linked series
    2: the linking together of a consecutive series of symbols or
       events or ideas etc; "it was caused by an improbable
       concatenation of circumstances"
    3: a series of things depending on each other as if linked
       together; "the chain of command"; "a complicated
       concatenation of circumstances" [syn: chain,
       concatenation]
    4: the act of linking together as in a series or chain