The Collaborative International Dictionary of English v.0.48:

Particular \Par*tic"u*lar\, a. [OE. particuler, F. particulier,
   L. particularis. See Particle.]
   1. Relating to a part or portion of anything; concerning a
      part separated from the whole or from others of the class;
      separate; sole; single; individual; specific; as, the
      particular stars of a constellation. --Shak.
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            [Make] each particular hair to stand an end,
            Like quills upon the fretful porpentine. --Shak.
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            Seken in every halk and every herne
            Particular sciences for to lerne.     --Chaucer.
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   2. Of or pertaining to a single person, class, or thing;
      belonging to one only; not general; not common; hence,
      personal; peculiar; singular. "Thine own particular
      wrongs." --Shak.
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            Wheresoever one plant draweth such a particular
            juice out of the earth.               --Bacon.
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   3. Separate or distinct by reason of superiority;
      distinguished; important; noteworthy; unusual; special;
      as, he brought no particular news; she was the particular
      belle of the party.
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   4. Concerned with, or attentive to, details; minute;
      circumstantial; precise; as, a full and particular account
      of an accident; hence, nice; fastidious; as, a man
      particular in his dress.
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   5. (Law)
      (a) Containing a part only; limited; as, a particular
          estate, or one precedent to an estate in remainder.
      (b) Holding a particular estate; as, a particular tenant.
          --Blackstone.
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   6. (Logic) Forming a part of a genus; relatively limited in
      extension; affirmed or denied of a part of a subject; as,
      a particular proposition; -- opposed to universal: e. g.
      (particular affirmative) Some men are wise; (particular
      negative) Some men are not wise.
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   Particular average. See under Average.

   Particular Baptist, one of a branch of the Baptist
      denomination the members of which hold the doctrine of a
      particular or individual election and reprobation.

   Particular lien (Law), a lien, or a right to retain a
      thing, for some charge or claim growing out of, or
      connected with, that particular thing.

   Particular redemption, the doctrine that the purpose, act,
      and provisions of redemption are restricted to a limited
      number of the human race. See Calvinism.
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   Syn: Minute; individual; respective; appropriate; peculiar;
        especial; exact; specific; precise; critical;
        circumstantial. See Minute.
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WordNet (r) 3.0 (2006):

Particular Baptist
    n 1: group of Baptist congregations believing the teachings of
         the French theologian John Calvin who believed in strict
         predetermination [syn: Calvinistic Baptist, Particular
         Baptist]