noun, plural sporangia [spuh-ran-jee-uh] . Botany, Mycology.
the case or sac in which spores are produced.
Also called spore case.

1815–25; < Neo-Latin, equivalent to spor- spor- + Greek angeîon vessel

sporangial, adjective
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World English Dictionary
sporangium (spəˈrændʒɪəm)
n , pl -gia
any organ, esp in fungi, in which asexual spores are produced
[C19: from New Latin, from sporo- + Greek angeion receptacle]

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American Heritage
Medical Dictionary

sporangium spo·ran·gi·um (spə-rān'jē-əm)
n. pl. spo·ran·gi·a (-jē-ə)
A cell within a fungus in which asexual spores are produced by progressive cleavage.

spo·ran'gi·al (-jē-əl) adj.
The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
sporangium   (spə-rān'jē-əm)  Pronunciation Key 
Plural sporangia
A cell or structure in which spores are produced. Ferns, fungi, mosses, and algae release spores from sporangia. Also called spore case.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
It then settles down to transform itself into a new sporangium, possibly made fabulous by a shrubby bunch of rhizoids.
Smaller, secondary sporangia form on short verticillate branchlets a short distance below the terminal sporangium.
The spores are ellipsoid and there is no swelling of the sporangium.
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