\Stro"ma\, n.; pl. {Stromata}. [L., a bed covering, Gr. ?
a couch or bed.]
1. (Anat.)
   (a) The connective tissue or supporting framework of an
       organ; as, the stroma of the kidney.
   (b) The spongy, colorless framework of a red blood
       corpuscle or other cell.
2. (Bot.) A layer or mass of cellular tissue, especially that
   part of the thallus of certain fungi which incloses the
   perithecia.