megasporangium[-spō ran′jē əm, -spə-]
megasporangium definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
noun pl. megasporangia
a sporangium, or spore case, containing only megaspores, as in some ferns
Origin: ModL: see mega- and amp; sporangium
megasporangium definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun pl. meg·a·spo·ran·gi·a
A structure that produces one or more megaspores. Also called macrosporangium.
megasporangium - Science Definition
Plural megasporangia megasporangia
A plant structure in which megaspores are formed, such as those of the female cones of pines.