Definition of Exine

1. Noun. (botany palynology) the outer layer of a pollen grain or spore; the exosporium ¹



¹ Source: wiktionary.com

Definition of Exine

1. the outer layer of certain spores [n -S]

Medical Definition of Exine

1. External part of pollen wall that is often elaborately sculptured in a fashion characteristic of the plant species. Contains sporopollenin. The term is also used for the outer part of a spore wall. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Exine Pictures

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Lexicographical Neighbors of Exine

exiled
exilement
exilements
exiler
exilers
exiles
exilian
exilic
exiling
exilities
exilition
exility
eximious
eximiously
exinanitions
exine (current term)
exines
exing
exinitic
exist
existability
existable
existance
existant
existed
existence
existenceless
existences
existencies
existency

Literary usage of Exine

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

1. Handbook of Practical Botany for the Botanical Laboratory and Private Student by Eduard Strasburger, William Hillhouse (1900)
"In water, yellow oil-drops come off from the surface of the exine, the grains soon ... The exine is studded with regularly-distributed large spines, ..."

2. Microscopic Botany: A Manual of the Microscope in Vegetable Histology by Eduard Strasburger (1887)
"In concentrated sulphuric acid the exine soon stains a red-brown and shows its structure then very distinctly. Most of the pollen grains of the ..."

3. Morphology of Angiosperms: (Morphology of Spermatophytes. Part II) by John Merle Coulter, Charles Joseph Chamberlain (1903)
"Among those aquatics that pollinate under water, as well as in the pollinia-bearing forms, the exine is said to be lacking. The origin and development of ..."

4. The Wild and Cultivated Cotton Plants of the World: A Revision of the Genus by George Watt (1907)
"As seen under the microscope there would seem to be four main types of cotton pollen-grains :— (a) Those in which the exine is greatly thickened and covered ..."

5. The London Journal of Botany by William Jackson Hooker (1842)
"I have shown, in the Journal of Botany for June, 1841, that the exine frequently consists of two parts, a proper membrane and certain appendages upon its ..."

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