megagametophyte

[ meg-uh-guh-mee-tuh-fahyt ]

/ ˌmɛg ə gəˈmi təˌfaɪt /

noun Botany.

the female gametophyte in seed plants.

Origin of megagametophyte

First recorded in 1930–35; mega- + gametophyte

OTHER WORDS FROM megagametophyte

meg·a·ga·me·to·phyt·ic

[meg-uh-guh-mee-tuh-fit-ik, -gam-i-], /ˌmɛg ə gəˌmi təˈfɪt ɪk, -ˌgæm ɪ-/, adjective

Words nearby megagametophyte

megaesophagus, megafauna, megaflop, megaflops, megagamete, megagametophyte, megahertz, megahit, megajoule, megakaryoblast, megakaryocyte

Scientific definitions for megagametophyte

megagametophyte

[ mĕg′ə-gə-mē′tə-fīt′ ]

The female gametophyte that develops from the megaspores of heterosporous plants. Among heterosporous species of the lycophyte plants, for example, the sporophyte plant produces megaspores stocked with food. These spores grow into megagametophytes that produce eggs. After fertilization of the eggs, the embryos grow into new sporophytes inside the megagametophyte and are nourished by the food within it. In the seed plants, the megagametophyte generation is very small and lives its entire existence within the ovules of the sporophyte plant, where some of its cells become eggs, while others become food reserves for the resultant embryos. See more at alternation of generations gametophyte.

单词	megagametophyte
释义	megagametophyte [ meg-uh-guh-mee-tuh-fahyt ] / ˌmɛg ə gəˈmi təˌfaɪt / noun Botany. the female gametophyte in seed plants. Origin of megagametophyte First recorded in 1930–35; mega- + gametophyte OTHER WORDS FROM megagametophyte meg·a·ga·me·to·phyt·ic [meg-uh-guh-mee-tuh-fit-ik, -gam-i-], /ˌmɛg ə gəˌmi təˈfɪt ɪk, -ˌgæm ɪ-/, adjective Words nearby megagametophyte megaesophagus, megafauna, megaflop, megaflops, megagamete, megagametophyte, megahertz, megahit, megajoule, megakaryoblast, megakaryocyte Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Scientific definitions for megagametophyte megagametophyte [ mĕg′ə-gə-mē′tə-fīt′ ] The female gametophyte that develops from the megaspores of heterosporous plants. Among heterosporous species of the lycophyte plants, for example, the sporophyte plant produces megaspores stocked with food. These spores grow into megagametophytes that produce eggs. After fertilization of the eggs, the embryos grow into new sporophytes inside the megagametophyte and are nourished by the food within it. In the seed plants, the megagametophyte generation is very small and lives its entire existence within the ovules of the sporophyte plant, where some of its cells become eggs, while others become food reserves for the resultant embryos. See more at alternation of generations gametophyte. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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