Source : Webster's Revised Unabridged Dictionary (1913)

Articulation \Ar*tic`u*la"tion\, n. [Cf. F. articulation, fr. L.
   articulatio.]
   1. (Anat.) A joint or juncture between bones in the skeleton.

   Note: Articulations may be immovable, when the bones are
         directly united (synarthrosis), or slightly movable,
         when they are united intervening substance
         (amphiarthrosis), or they may be more or less freely
         movable, when the articular surfaces are covered with
         synovial membranes, as in complete joints
         (diarthrosis). The last (diarthrosis) includes hinge
         joints, admitting motion in one plane only (ginglymus),
         ball and socket joints (enarthrosis), pivot and
         rotation joints, etc.

   2. (Bot.)
      (a) The connection of the parts of a plant by joints, as
          in pods.
      (b) One of the nodes or joints, as in cane and maize.
      (c) One of the parts intercepted between the joints; also,
          a subdivision into parts at regular or irregular
          intervals as a result of serial intermission in
          growth, as in the cane, grasses, etc. --Lindley.

   3. The act of putting together with a joint or joints; any
      meeting of parts in a joint.

   4. The state of being jointed; connection of parts. [R.]

            That definiteness and articulation of imagery.
                                                  --Coleridge.

   5. The utterance of the elementary sounds of a language by
      the appropriate movements of the organs, as in
      pronunciation; as, a distinct articulation.

   6. A sound made by the vocal organs; an articulate utterance
      or an elementary sound, esp. a consonant.

Source : WordNet®

articulation
     n 1: the aspect of pronunciation that involves bringing
          articulatory organs together so as to shape the sounds
          of speech
     2: the shape or manner in which things come together and a
        connection is made [syn: {join}, {joint}, {juncture}, {junction}]
     3: expressing in coherent verbal form; "the articulation of my
        feelings"; "I gave voice to my feelings" [syn: {voice}]
     4: (anatomy) the point of connection between two bones or
        elements of a skeleton (especially if the articulation
        allows motion) [syn: {joint}, {articulatio}]
     5: the act of joining things in such a way that motion is
        possible