Webster’s Revised Unabridged Dictionary · 1913
Stroma
Stro′ma (strō′mȧ), n.; pl. Stromata (#). [L., a bed covering, Gr. στρῶμα 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.