gymnosperm

gym·no·sperm

G0325600 (jĭm′nə-spûrm′)n. A vascular plant, such as a cycad or conifer, whose seeds are not enclosed within an ovary.

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[From New Latin Gymnospermae, former class name, from Greek gumnospermos : gumnos, naked; see nog^w- in Indo-European roots + sperma, seed; see sperm¹.]

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gym′no·sper′mous adj.gym′no·sper′my n.

gymnosperm

(ˈdʒɪmnəʊˌspɜːm; ˈɡɪm-) n (Botany) any seed-bearing plant in which the ovules are borne naked on the surface of the megasporophylls, which are often arranged in cones. Gymnosperms, which include conifers and cycads, are traditionally classified in the division Gymnospermae but in modern classifications are split into separate phyla. Compare angiosperm ˌgymnoˈspermous adj

gym•no•sperm

(ˈdʒɪm nəˌspɜrm)

n. any nonflowering plant having seeds that are not enclosed in fruit at the time of pollination; any conifer, cycad, or ginkgo. [1820–30; < New Latin gymnospermae (pl.)]

gym·no·sperm

(jĭm′nə-spûrm′) Any of a group of plants that produce seeds that are not enclosed in a fruit or ovary. Most gymnosperms are cone-bearing trees or shrubs. Seeds develop next to the inside surface of the scales of female cones. Gymnosperms include the conifers, the cycads, and the ginkgo. Compare angiosperm.

Thesaurus

Noun

1.

gymnosperm - plants of the class Gymnospermae having seeds not enclosed in an ovaryphanerogam, seed plant, spermatophyte - plant that reproduces by means of seeds not sporesclass Gymnospermae, division Gymnospermophyta, Gymnospermae, Gymnospermophyta - 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)progymnosperm - an ancestral fossil type from which modern gymnosperms are thought to have derivedwelwitschia, Welwitschia mirabilis - 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 oldcycad - any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leavespteridosperm, seed fern - an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)

Translations

голосеменнойголосемянный