stroma

1. The connective tissue framework of an organ, gland, or other structure, as distinguished from the tissues performing the special function of the organ or part.
2. The spongy, colorless framework of a red blood cell or other cell.

[Late Latin strōma, mattress, covering, from Greek, bed.]

Pl. stromata [Gr.] the tissue forming the ground substance, framework, or matrix of an organ, as opposed to the functioning part or parenchyma, e.g. stroma iridis, stroma vitreum.

Stroma may refer to:

• Stroma, Scotland, an island off the northern coast of Scotland
• Stroma (animal tissue), the connective, functionally supportive framework of a biological cell, tissue, or organ
• Stroma, the thick fluid found in between grana, which are stacks of thylakoid disks. The stroma is where the carbohydrate formation reactions occur in the chloroplasts of plant cells undergoing photosynthesis.
• Stroma (mycology), the dense structural tissue that produces fruiting bodies; made of nonvegetative (i.e. asexual) hyphae.
• Stromal cell, a connective tissue cell of an organ found in the loose connective tissue
• Stroma of ovary
• Freddie Stroma, a British actor

See also

• Struma

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