| 单词 | pteridosperm |
| 释义 | pteridosperm in British English (ˈtɛrɪdəˌspɜːm) noun any extinct seed-producing fernlike plant of the group Pteridospermae Also called: seed fernWord origin C19: from Greek pteris a fern + -spermpteridosperm in American English (ˈtɛrɪdoʊˌspɜrm) noun seed fern |
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