The Collaborative International Dictionary of English v.0.48:

Clotted \Clot"ted\, a.
   Composed of clots or clods; having the quality or form of a
   clot; sticky; slimy; foul. "The clotted glebe." --J. Philips.
   [1913 Webster]

         When lust . . .
         Lets in defilement to the inward parts,
         The soul grows clotted by contagion.     --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Clot \Clot\, v. i. [imp. & p. p. Clotted; p. pr. & vb. n.
   Clotting.]
   To concrete, coagulate, or thicken, as soft or fluid matter
   by evaporation; to become a cot or clod.
   [1913 Webster]

WordNet (r) 3.0 (2006):

clotted
    adj 1: thickened or coalesced in soft thick lumps (such as clogs
           or clots); "clotted blood"; "seeds clogged together"
           [syn: clogged, clotted]

Moby Thesaurus II by Grady Ward, 1.0:

57 Moby Thesaurus words for "clotted":
   adhesive, amylaceous, caked, cakey, clabbered, clammy, coagulated,
   congealed, curded, curdled, doughy, gaumy, gelatinized, gelatinous,
   glairy, gluelike, gluey, glutenous, glutinose, glutinous, gooey,
   grumous, gumbo, gumbolike, gumlike, gummous, gummy, heavy,
   incrassate, inspissate, inspissated, jelled, jellied, jellylike,
   lumpish, lumpy, mucilaginous, pasty, ropy, slabby, slimy, slithery,
   starchy, sticky, stodgy, stringy, syrupy, tacky, tenacious, thick,
   thickened, tough, tremelloid, tremellose, viscid, viscose,
   viscous