Definition of gymnosperm in US English:



  • A plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.

    Subdivision Gymnospermae, division Spermatophyta

    Compare with angiosperm
    • ‘Moreover, since the expression pattern is similar in a gymnosperm and in an angiosperm this function appears to be evolutionarily conserved.’
    • ‘The known flora consists of 41 ferns and fern allies, 3 gymnosperms, 291 monocots, and 516 dicots.’
    • ‘Among the plant branches, there were several supported groupings representing only gymnosperms or conifers.’
    • ‘Taxonomists can now say that the ferns' closest cousins are the seed plants - angiosperms (flowering plants) and gymnosperms (such as conifers).’
    • ‘Simple trichomes are present on aerial surfaces of most angiosperms and on some gymnosperms and bryophytes.’