gymnosperm

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gym·no·sperm

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

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

gym′no·sper′mous adj.
gym′no·sper′my n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gymnosperm - plants of the class Gymnospermae having seeds not enclosed in an ovarygymnosperm - plants of the class Gymnospermae having seeds not enclosed in an ovary
phanerogam, seed plant, spermatophyte - plant that reproduces by means of seeds not spores
class 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 derived
welwitschia, 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 old
cycad - any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves
pteridosperm, seed fern - an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Bryophytes, gymnosperms, monocotyledons--these are terms you probably are not familiar with unless you remember your high school science class.
This publication will eventually include all vascular plants with volumes published to date covering all ferns, fern allies, gymnosperms, and some angiosperms including two subclasses of dicots, Magnoliidae and Hamamelidae, and four subclasses of monocots, Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae.
Cycads are related to conifers and come from the plant division Coniferophyta, also known as the Gymnosperms, which literally means naked seeds, which are at the primitive end of the plant kingdom, but they are survivors, having been around for 250 million years or so.
are a relict of the past, like most of the gymnosperms, the group to which pines, firs and cypresses all belong.
For example, they interpret the early evolution of morphological dormancy in gymnosperms as permitting germination to be controlled by seed-environment interactions rather than indirectly by the delay between pollination and fertilization.
While "cones" is not among the responses, these seed-bearing parts of gymnosperms develop from the stem of the plant.
Nine cDNAs showed similarity to other conifer sequences, reflecting a sparse public sequencing effort for gymnosperms in general.
Pteridophytes and Gymnosperms. Springer-Verlag, Berlin.
The saplings of different varieties of gymnosperms like 'Depdar' and 'Nandar'are expensive and the people, by and large, can not afford their large scale plantation.
the dominance of spores infers at least seasonally humid conditions and the dominance of gymnosperms indicates dry conditions.
Flora of Oregon; Volume 1: Pteridophytes, Gymnosperms, and Monocots