megasporangium

American  

[meg-uh-spaw-ran-jee-uhm, -spoh-] / ˌmɛg ə spɔˈræn dʒi əm, -spoʊ- /

noun

Botany.

plural

megasporangia

1. a sporangium containing megaspores.

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megasporangium British  

/ ˌmɛɡəspɔːˈrændʒɪəm /

noun

1. the structure in certain spore-bearing plants in which the megaspores are formed: corresponds to the ovule in seed plants Compare microsporangium

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megasporangium Scientific  

/ mĕg′ə-spə-răn′jē-əm /

plural

megasporangia

1. A plant structure in which megaspores are formed, such as those of the female cones of pines.

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Etymology

Origin of megasporangium

First recorded in 1885–90; mega- + sporangium

Example Sentences

These are with few exceptions foliar structures, known in comparative morphology as sporophylls, because they bear the spores, namely, the microspores or pollen-grains which are developed in the microsporangia or pollen-sacs, and the megaspore, which is contained in the ovule or megasporangium.

From Project Gutenberg