| 单词 | pteridosperm |
| 释义 | pteridosperm (once / 1074483 pages) n WORD FAMILY pteridosperm: pteridosperms n an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae) Syn|Hyper seed fern gymnosperm plants of the class Gymnospermae having seeds not enclosed in an ovary |
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