stroma noun. ['strǝʊmǝ] Pl. -mas, -mata [-mǝtǝ]. M19.
[mod. Latin use of late Latin = bed-covering, from Greek strōma anything spread or laid out for lying or sitting on, from base of strōnnunai spread.]
1. a. Anatomy. The supportive tissue of an epithelial organ, tumour, etc., consisting of connective tissues, blood-vessels, etc. M19.
b. The spongy framework of protein fibres in a red blood cell. L19.

2. Botany.
a. A cushion-like mass of fungal tissue, having spore-bearing structures either embedded in it or on its surface. M19.
b. The matrix of a chloroplast, in which the grana are embedded. E20.

■ stromal adjective (Anatomy) of, pertaining to, or of the character of the stroma or supporting tissue of an organ M19.

[TahlilGaran] English Dictionary ▲