Definition of Macrospore

1. Noun. Larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte.

Exact synonyms: Megaspore
Generic synonyms: Spore



Definition of Macrospore

1. n. One of the specially large spores of certain flowerless plants, as Selaginella, etc.

Definition of Macrospore

1. Noun. One of the specially large spores of certain flowerless plants, as Selaginella, etc. ¹

¹ Source: wiktionary.com

Medical Definition of Macrospore

1. One of the specially large spores of certain flowerless plants, as Selaginella, etc. Origin: Macro- + spore. Source: Websters Dictionary (01 Mar 1998)

Macrospore Pictures

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Lexicographical Neighbors of Macrospore

macroseism
macroseismic
macroseisms
macrosigmoid
macrosis
macrosmatic
macrosomia
macrosphere
macrospheres
macrospicule
macrospicules
macrospin
macrosplanchnic
macrosporangia
macrosporangium
macrospore (current term)
macrospores
macrosporic
macrostate
macrostates
macrostatistics
macrostep
macrosteps
macrostereognosis
macrostereoscopic
macrostomia
macrostructural
macrostructure
macrostructures
macrosynteny

Literary usage of Macrospore

Below you will find example usage of this term as found in modern and/or classical literature:

1. Text-book of Botany, Morphological and Physiological by Julius Sachs (1882)
"macrospore—increases very much in size whilst the other three gradually shrivel. Figures 323 and 324 illustrate the development of the ..."

2. A Student's Text-book of Botany by Sydney Howard Vines (1896)
"The nucleus of the macrospore divides; repeated nuclear division takes place, until a large nun.ber of nuclei are formed which lie in the protoplasm round ..."

3. Outlines of Botany for the High School Laboratory and Classroom by Robert Greenleaf Leavitt, Charles Herbert Clark, Mrs. Sophia M'Ilvaine (Bledsoe) Herrick, Asa Gray (1901)
"The embryo sac of Phanerogams is regarded as a macrospore remaining in its sporangium (nucellus of ovule, the integuments representing the ..."

4. The Natural History of Plants: Their Forms, Growth, Reproduction, and by Anton Kerner von Marilaun (1902)
"Two kinds of tissue are in reality developed within the limits of each macrospore, viz.: the one above referred to as emerging between the torn edges of the ..."

5. Contributions from the Botanical Laboratory of the University of Pennsylvania by University of Pennsylvania Botanical Laboratory, University of Pennsylvania, Botanical Laboratory (1904)
"LS of developing macrospore cell, later stage, showing constricted protoplasm of the ... LS of micropylar end of macrospore or embryo-sac cell, ..."

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