The Collaborative International Dictionary of English v.0.48:

Membered \Mem"bered\, a.
   1. Having limbs; -- chiefly used in composition.
      [1913 Webster]

   2. (Her.) Having legs of a different tincture from that of
      the body; -- said of a bird in heraldic representations.
      [1913 Webster]

WordNet (r) 3.0 (2006):

membered
    adj 1: having members; normally used in chemistry in combination
           with a number [ant: memberless]