Pronunciation: strat'um, ta; stra'tum; ti
Definition: One of the layers of differentiated tissue, the aggregate of which forms any given structure, such as the retina or the skin.
[L. sterno, pp. stratus, to spread out, strew, ntr. of pp. as noun, stratum, a bed cover, layer]
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Examples: glitazone, GI cocktail, etc.