The Collaborative International Dictionary of English v.0.48:

Palmate \Pal"mate\, n. (Chem.)
   A salt of palmic acid; a ricinoleate. [Obsoles.]
   [1913 Webster] Palmate

The Collaborative International Dictionary of English v.0.48:

Palmate \Pal"mate\, Palmated \Pal"ma*ted\, a. [L. palmatus
   marked with the palm of a hand, from palma the palm of the
   hand.]
   [1913 Webster]
   1. Having the shape of the hand; resembling a hand with the
      fingers spread.
      [1913 Webster]

   2. (Bot.) Spreading from the apex of a petiole, as the
      divisions of a leaf, or leaflets, so as to resemble the
      hand with outspread fingers. --Gray.
      [1913 Webster]

   3. (Zool.)
      (a) Having the anterior toes united by a web, as in most
          swimming birds; webbed. See Illust. (i) under Aves.
      (b) Having the distal portion broad, flat, and more or
          less divided into lobes; -- said of certain corals,
          antlers, etc.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ricinoleate \Ric`in*o"le*ate\, n. (Chem.)
   A salt of ricinoleic acid; -- formerly called palmate.
   [1913 Webster]

WordNet (r) 3.0 (2006):

palmate
    adj 1: (of the feet of water birds) having three toes connected
           by a thin fold of skin
    2: of a leaf shape; having leaflets or lobes radiating from a
       common point [syn: palmate, palm-shaped]