gymnosperm
English Thesaurus
1. plants of the class Gymnospermae having seeds not enclosed in an ovary (noun.plant)
| hyponym | : | progymnosperm, |
| definition | : | an ancestral fossil type from which modern gymnosperms are thought to have derived (noun.plant) |
| hyponym | : | welwitschia, welwitschia mirabilis, |
| definition | : | curious plant of arid regions of southwestern Africa having a yard-high and yard-wide trunk like a turnip with a deep taproot and two large persistent woody straplike leaves growing from the base; living relic of a flora long disappeared; some may be 700-5000 years old (noun.plant) |
| hyponym | : | cycad, |
| definition | : | any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves (noun.plant) |
| hyponym | : | pteridosperm, seed fern, |
| definition | : | an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae) (noun.plant) |
| member meronym | : | class gymnospermae, division gymnospermophyta, gymnospermae, gymnospermophyta, |
| definition | : | plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina (class Gnetopsida) and Coniferophytina (class Coniferopsida); in some classifications the Coniferophytina are divided into three groups: Pinophytina (class Pinopsida) and Ginkgophytina (class Ginkgopsida) and Taxophytina (class Taxopsida) (noun.plant) |
| derivation | : | gymnospermous, |
| definition | : | relating to or characteristic of plants of the class Gymnospermae (adj.pert) |
| derivation | : | gymnospermous, |
| definition | : | relating to or characteristic of plants of the class Gymnospermae (adj.pert) |
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