Source : Webster's Revised Unabridged Dictionary (1913)

Pectinate \Pec"ti*na`te\, Pectinated \Pec"ti*na`ted\, a. [L.
   pectinatus, p. pr. of pectinare to comb, from pecten, -inis,
   a comb; cf. Gr. ? to comb, AS. feax hair, OHG. fahs, E.
   paxwax.]
   1. Resembling the teeth of a comb.

   2. (Nat. Hist.) Having very narrow, close divisions, in
      arrangement and regularity resembling those of a comb;
      comblike; as, a pectinate leaf; pectinated muscles. See
      Illust.
      (e) of {Antenn[ae]}.

   3. Interlaced, like two combs. [R.] ``Our fingers pectinated,
      or shut together.'' --Sir T. Browne.

   {Pectinate claw} (Zo["o]l.), a claw having a serrate edge,
      found in some birds, and supposed to be used in cleaning
      the feathers.

Source : WordNet®

pectinate
     adj : like a comb