VERB (2)

1. combine two strings to form a single one;

2. add by linking or joining so as to form a chain or series;
- Example: "concatenate terms"
- Example: "concatenate characters"

The Collaborative International Dictionary of English v.0.48:

Concatenate \Con*cat"e*nate\ (k[o^]n*k[a^]t"[-e]*n[=a]t), v. t.
   [imp. & p. p. Concatenated; p. pr. & vb. n.
   Concatenating.] [L. concatenatus, p. p. of concatenare to
   concatenate. See Catenate.]
   To link together; to unite in a series or chain, as things
   depending on one another.
   [1913 Webster]

         This all things friendly will concatenate. --Dr. H.
                                                  More
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

67 Moby Thesaurus words for "concatenate":
   accouple, accumulate, agglutinate, amass, articulate, assemble,
   associate, band, be continuous, bond, bracket, bridge, bridge over,
   catenate, cement, chain, clap together, collect, combine, comprise,
   conglobulate, conjoin, conjugate, connect, connect up, continuate,
   continue, copulate, couple, cover, embrace, encompass,
   form a series, gather, glue, include, join, knot, lay together,
   league, link, lump together, maintain continuity, marry, marshal,
   mass, merge, mobilize, pair, piece together, put together,
   roll into one, run on, solder, span, splice, stick together,
   string, string together, take in, tape, thread, tie, unify, unite,
   weld, yoke