angiosperm
noun
an·gio·sperm
ˈan-jē-ə-ˌspərm 
plural angiosperms
: any of a class (Angiospermae) of vascular plants that have male and female reproductive structures enclosed in a flower, that have seeds which arise from ovules contained in the ovaries, and that produce dry or fleshy fruits after double fertilization : flowering plant
Angiosperms … have their ovules consistently enclosed in a carpel, which prevents direct access of pollen to the ovules.—
P. Barry Tomlinson
P. Barry TomlinsonPerhaps such habitats even antedate the appearance of angiosperm plants, which first flourished on a large scale in the Cretaceous period …—Michael Goulding
compare gymnosperm
Michael Goulding
angiospermy
noun
Angiospermy is a key innovation in angiosperms. It does not occur in other plant groups. The ovules are completely enclosed in a carpel.
—Peter K. Endress and Anton Igersheim
Peter K. Endress and Anton Igersheim
Examples of angiosperm in a Sentence
Recent Examples on the Web
The surviving angiosperms got a boost from changes to the soil.
—Riley Black, Smithsonian Magazine, 29 July 2024
During this research, the team found out that angiosperms, which are generally hardwood trees like oaks and cherry, have macrofibrils measuring about 17 nanometers in diameter on average.
—Michael Franco, New Atlas, 31 July 2024
The evolution and spread of legumes, too, increased nitrogen levels in soils and favored the spread of angiosperms.
—Riley Black, Smithsonian Magazine, 29 July 2024
Today, nearly 80 percent of all terrestrial plants are angiosperms.
—Jack Tamisiea, New York Times, 12 Sep. 2023
This finding highlights how resilient angiosperms have been over hundreds of millions of years.
—Jamie Thompson, Discover Magazine, 15 Sep. 2023
Flowering plants are known to scientists as angiosperms.
—Jack Tamisiea, New York Times, 12 Sep. 2023
And the roses are an not unusual angiosperm (flowering plant) lineage in this regard.
—Jamie Thompson, Discover Magazine, 15 Sep. 2023
To uncover the evolutionary insights missing from the fossil record, the researchers analyzed two evolutionary trees containing more than 100,000 species of living angiosperms.
—Jack Tamisiea, New York Times, 12 Sep. 2023
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Riley Black, Smithsonian Magazine, 29 July 2024
During this research, the team found out that angiosperms, which are generally hardwood trees like oaks and cherry, have macrofibrils measuring about 17 nanometers in diameter on average.
—Michael Franco, New Atlas, 31 July 2024
The evolution and spread of legumes, too, increased nitrogen levels in soils and favored the spread of angiosperms.
—Riley Black, Smithsonian Magazine, 29 July 2024
Today, nearly 80 percent of all terrestrial plants are angiosperms.
—Jack Tamisiea, New York Times, 12 Sep. 2023
This finding highlights how resilient angiosperms have been over hundreds of millions of years.
—Jamie Thompson, Discover Magazine, 15 Sep. 2023
Flowering plants are known to scientists as angiosperms.
—Jack Tamisiea, New York Times, 12 Sep. 2023
And the roses are an not unusual angiosperm (flowering plant) lineage in this regard.
—Jamie Thompson, Discover Magazine, 15 Sep. 2023
To uncover the evolutionary insights missing from the fossil record, the researchers analyzed two evolutionary trees containing more than 100,000 species of living angiosperms.
—Jack Tamisiea, New York Times, 12 Sep. 2023
Dictionary Entries Near angiosperm
Cite this Entry
“Angiosperm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/angiosperm. Accessed 22 Nov. 2024.
Copy CitationKids Definition
angiosperm
noun
an·gio·sperm
ˈan-jē-ə-ˌspərm
Medical Definition
angiosperm
noun
an·gio·sperm
ˈan-jē-ə-ˌspərm
: any of a class (Angiospermae) of plants (as oaks or roses) that have reproductive structures contained in flowers and seeds enclosed in ovaries compare gymnosperm
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