DICT.TW Dictionary Taiwan
54.196.106.106

Search for:
[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

3 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Rha·chis n.; pl. E. Rhachises L. Rhachides   [Written also rechis.]
 1. Anat. The spine.
 2. Bot. (a) The continued stem or midrib of a pinnately compound leaf, as in a rose leaf or a fern. (b) The principal axis in a raceme, spike, panicle, or corymb.
 3. Zool. (a) The shaft of a feather. The rhachis of the after-shaft, or plumule, is called the hyporhachis. (b) The central cord in the stem of a crinoid. (c) The median part of the radula of a mollusk. (d) A central cord of the ovary of nematodes.
 

From: WordNet (r) 2.0

 rachis
      n 1: axis of a compound leaf or compound inflorescence
      2: the series of vertebrae forming the axis of the skeleton and
         protecting the spinal cord; "the fall broke his back"
         [syn: spinal column, vertebral column, spine, backbone,
          back]
      [also: rhachises (pl)]

From: WordNet (r) 2.0

 rhachises
      See rachis