(noun) a plant structure that produces megaspores
Source: WordNet® 3.1
macrosporangium (plural macrosporangia)
(botany) A megasporangium; sporangium or conceptacle containing only large spores; opposed to microsporangium.
Mac`ro*spo*ran"gi*um, n. Etym: [NL. See Macro-, and Sporangium.] (Bot.)
Definition: A sporangium or conceptacle containing only large spores; -- opposed to microsporangium. Both are found in the genera Selaginella, Isoctes, and Marsilia, plants remotely allied to ferns.
Source: Webster’s Unabridged Dictionary 1913 Edition
3 February 2023
(verb) cause to continue in a certain state, position, or activity; e.g., ‘keep clean’; “hold in place”; “She always held herself as a lady”; “The students keep me on my toes”
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