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spissitude

n.

c.1400, "density, thickness, compactness," from Latin spissitudo, from spissus "thick, dense, compact, close" (source of Italian spesso, Spanish espeso, Old French espes, French épais).

Online Etymology Dictionary, © 2010 Douglas Harper

spissitude in Medicine

spissitude

(spĭsĭ-tōōd′)
n.
  1. The condition of a fluid thickened almost to a solid by inspissation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.