Definition of medullosan in English:

medullosan

adjective ˌmɛdəˈləʊsn

Botany

Of, relating to, or belonging to the group of extinct seed-bearing ferns (pteridosperms) including the genus Medullosa, known from Carboniferous and Permian fossils, whose stems have large, widely-spaced petioles and branched vascular cylinders.

noun ˌmɛdəˈləʊsn

Botany

A seed-bearing fern of the extinct genus Medullosa or the group to which it belongs.

Origin

Early 20th century; earliest use found in Philosophical Transactions of the Royal Society of London. From Medullosa + -an.

Definition of medullosan in US English:

medullosan

adjectiveˌmɛdəˈləʊsn

Botany

Of, relating to, or belonging to the group of extinct seed-bearing ferns (pteridosperms) including the genus Medullosa, known from Carboniferous and Permian fossils, whose stems have large, widely-spaced petioles and branched vascular cylinders.

nounˌmɛdəˈləʊsn

Botany

A seed-bearing fern of the extinct genus Medullosa or the group to which it belongs.

Origin

Early 20th century; earliest use found in Philosophical Transactions of the Royal Society of London. From Medullosa + -an.

词汇	medullosan
释义	Definition of medullosan in English: medullosan adjective ˌmɛdəˈləʊsn Botany Of, relating to, or belonging to the group of extinct seed-bearing ferns (pteridosperms) including the genus Medullosa, known from Carboniferous and Permian fossils, whose stems have large, widely-spaced petioles and branched vascular cylinders. noun ˌmɛdəˈləʊsn Botany A seed-bearing fern of the extinct genus Medullosa or the group to which it belongs. Origin Early 20th century; earliest use found in Philosophical Transactions of the Royal Society of London. From Medullosa + -an. Definition of medullosan in US English: medullosan adjectiveˌmɛdəˈləʊsn Botany Of, relating to, or belonging to the group of extinct seed-bearing ferns (pteridosperms) including the genus Medullosa, known from Carboniferous and Permian fossils, whose stems have large, widely-spaced petioles and branched vascular cylinders. nounˌmɛdəˈləʊsn Botany A seed-bearing fern of the extinct genus Medullosa or the group to which it belongs. Origin Early 20th century; earliest use found in Philosophical Transactions of the Royal Society of London. From Medullosa + -an.
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