stroma

noun
stro·​ma | \ ˈstrō-mə How to pronounce stroma (audio) \
plural stromata\ ˈstrō-​mə-​tə How to pronounce stroma (audio) \

Definition of stroma

1a : a compact mass of fungal hyphae producing perithecia or pycnidia
b : the colorless proteinaceous matrix of a chloroplast in which the chlorophyll-containing lamellae are embedded
2a : the supporting framework of an animal organ typically consisting of connective tissue
b : the spongy protoplasmic framework of some cells (such as a red blood cell)

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Other Words from stroma

stromal \ ˈstrō-​məl How to pronounce stroma (audio) \ adjective

Examples of stroma in a Sentence

Recent Examples on the Web But for the folks who do have them, the prostate is made up of tissue known as stroma, secretory glands that produce semen ingredients, and muscle fibers. Zahra Barnes, SELF, "How to Give a Prostate Massage That’s Actually Safe and Fun," 7 Aug. 2020 The surgeon first uses a suction ring to flatten the eye in order to cut a flap in the cornea, folding back the flap back to reveal the middle section, called the stroma. Author: Roni Caryn Rabin, Anchorage Daily News, "Blurred vision, burning eyes: This is a Lasik success?," 12 June 2018 The surgeon first uses a suction ring to flatten the eye in order to cut a flap in the cornea, folding the flap back to reveal the middle section, called the stroma. New York Times, "Blurred Vision, Burning Eyes: This Is a Lasik Success?," 11 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'stroma.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of stroma

circa 1832, in the meaning defined at sense 1a

History and Etymology for stroma

New Latin stromat-, stroma, from Latin, bed covering, from Greek strōmat-, strōma, from stornynai to spread out — more at strew

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Time Traveler for stroma

Time Traveler

The first known use of stroma was circa 1832

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Cite this Entry

“Stroma.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stroma. Accessed 13 Apr. 2021.

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More Definitions for stroma

stroma

noun
stro·​ma | \ ˈstrō-mə How to pronounce stroma (audio) \
plural stromata\ -​mət-​ə How to pronounce stroma (audio) \

Medical Definition of stroma

1 : the supporting framework of an animal organ typically consisting of connective tissue
2 : the spongy protoplasmic framework of some cells (as a red blood cell)

Other Words from stroma

stromal \ -​məl How to pronounce stroma (audio) \ adjective

Comments on stroma

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