stroma

noun
stro·​ma | \ˈstrō-mə \
plural stromata\ ˈstrō-​mə-​tə \

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 \ adjective

Examples of stroma in a Sentence

Recent Examples on the Web

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.

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

The first known use of stroma was circa 1832

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More Definitions for stroma

stroma

noun
stro·​ma | \ˈstrō-mə \
plural stromata\ -​mət-​ə \

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 \ adjective

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