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n. pl. ma·zae·di·a (-dē-ə)
A fruiting body of some lichens in which the spores lie freely in a powdery mass that is enclosed in a peridium.

[New Latin : Greek maza, lump; see mag- in Indo-European roots + Latin aedēs, house.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) biology a powdery mass of ascospores found within the peridium of certain lichen
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