macrosporangium

[ mak-roh-spuh-ran-jee-uhm ]

noun

, Botany.

, plural mac·ro·spo·ran·gi·a [-jee-, uh].

1. megasporangium.

macrosporangium

/ ˌmækrəʊspɔːˈrændʒɪəm /

noun

1. another name for megasporangium

Word History and Origins

Origin of macrosporangium¹

First recorded in 1870–75; macro- + sporangium

Example Sentences

C, longitudinal section of a spike, with a single macrosporangium at the base; the others, microsporangia, × 3.

From Project Gutenberg

Secondly, the nucleus of the ovule corresponds with the macrosporangium of Selaginella, through the connecting link of the conifers, where the ovule is of similar origin and position to the macrosporangium of the Lycopodiaceæ.

From Project Gutenberg

The macrosporangia are also ordinarily known as “ovules,” a name given before it was known that these were the same as the macrosporangia of the higher pteridophytes.

From Project Gutenberg

The spores are of two kinds, as in Selaginella, but the macrosporangia contain numerous macrospores.

From Project Gutenberg

In the seed plants the macrosporangia remain attached to the parent plant, in nearly all cases, until the archegonia are fertilized and the embryo plant formed.

From Project Gutenberg