humus-forming plant

  • 1humus — noun Etymology: New Latin, from Latin, earth more at humble Date: 1796 a brown or black complex variable material resulting from partial decomposition of plant or animal matter and forming the organic portion of soil …

    New Collegiate Dictionary

  • 2humus — hu·mus hyü məs, yü n a brown or black complex variable material resulting from partial decomposition of plant or animal matter and forming the organic portion of soil …

    Medical dictionary

  • 3reproductive system, plant — Introduction       any of the systems, sexual or asexual, by which plants reproduce. In plants, as in animals, the end result of reproduction is the continuation of a given species, and the ability to reproduce is, therefore, rather conservative …

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  • 4soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… …

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  • 5fern — fernless, adj. fernlike, adj. /ferrn/, n. any seedless, nonflowering vascular plant of the class Filicinae, of tropical to temperate regions, characterized by true roots produced from a rhizome, triangular fronds that uncoil upward and have a… …

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  • 6Fern — /ferrn/, n. a female given name. * * * Any of about 10,000–12,000 species (division Filicophyta) of nonflowering vascular plants that have true roots, stems, and complex leaves and reproduce by spores. Though ferns were once classified with the… …

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  • 7apterygote — /ap ter i goht , ap teuhr /, adj. belonging or pertaining to the Apterygota, a subclass of primitive wingless insects that undergo little or no metamorphosis. Also, apterygotous /ap ter i goh teuhs/. [ < NL Apterygota name of the subclass, equiv …

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  • 8Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock …

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  • 9Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,&#8230; …

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  • 10Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …

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