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Definition of Pteridosperm
1. Noun. An extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae).
Definition of Pteridosperm
1. Noun. Any of various extinct gymnosperms, of the division ''Pteridospermatophyta'', resembling ferns, but producing seeds instead of spores ¹
¹ Source: wiktionary.com
Definition of Pteridosperm
1. [n -S]
Lexicographical Neighbors of Pteridosperm
Literary usage of Pteridosperm
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"A single plant of the group is a "pteridosperm.11 The cases in which the evidence
available appears to be decisive are but few; and to these have been ..."
2. The Evolution of Plants by Dukinfield Henry Scott (1911)
"The gap between a pteridosperm and such a Cycad as the female plant of ...
But though we may well compare the seed-bearing frond of a pteridosperm with the ..."
3. Science by American Association for the Advancement of Science (1904)
"The name was further established by Oliver in a paper entitled ' A New pteridosperm,'
published in the ..."
4. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"... indicates an ancient and collateral relationship with the balance of the
Coniferophyta going back possibly to the same pteridosperm plexus from which ..."
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