pteridosperm
معنی فارسی
سرخس تخمي.
معنی کامل و مثالها
/-spu_rm´/n.
● رجوع شود به: seed fern
ریشه و کاربرد
ریشه
From Greek pteris 'fern' + sperma 'seed'.
مثال
- Pteridosperms are believed to be the ancestors of seed plants.
- The fossil record provides evidence of pteridosperms.
- Pteridosperms were prevalent during the Paleozoic era.
ترکیبهای رایج
Pteridosperm fossil Extinct pteridosperm Pteridosperm ancestor
تعریف انگلیسی
noun
- an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)