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We found 30 dictionaries with English definitions that include the word pyrethrum: Click on the first link on a line below to go directly to a page where "pyrethrum" is defined. General (23 matching dictionaries) pyrethrum: American Heritage Dictionary of the English Language [home, info] pyrethrum: Collins English Dictionary [home, info] Pyrethrum, pyrethrum: Vocabulary.com [home, info] pyrethrum: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Pyrethrum, pyrethrum: Wordnik [home, info] pyrethrum: Wiktionary [home, info] pyrethrum: Compact Oxford English Dictionary [home, info] pyrethrum: Webster's New World College Dictionary, 4th Ed. [home, info] pyrethrum: The Wordsmyth English Dictionary-Thesaurus [home, info] pyrethrum: Infoplease Dictionary [home, info] pyrethrum: Dictionary.com [home, info] Pyrethrum, pyrethrum: UltraLingua English Dictionary [home, info] Pyrethrum: Wikipedia, the Free Encyclopedia [home, info] Pyrethrum: Rhymezone [home, info] pyrethrum: Hutchinson's Dictionary of Difficult Words [home, info] Pyrethrum: 1911 edition of the Encyclopedia Britannica [home, info] pyrethrum: Free Dictionary [home, info] pyrethrum: Hutchinson Dictionaries [home, info] pyrethrum: Luciferous Logolepsy [home, info] pyrethrum: Mnemonic Dictionary [home, info] pyrethrum: WordNet 1.7 Vocabulary Helper [home, info] Pyrethrum, pyrethrum: LookWAYup Translating Dictionary/Thesaurus [home, info] pyrethrum: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) pyrethrum: Encyclopedia [home, info] Medicine (2 matching dictionaries) pyrethrum: online medical dictionary [home, info] pyrethrum: Medical dictionary [home, info] Science (3 matching dictionaries) pyrethrum: Dictionary of Botanical Epithets [home, info] Pyrethrum: Botanical Name listing of Plants [home, info] Pyrethrum: Garden Flower, Shrub and Tree Glossary [home, info] Tech (1 matching dictionary) pyrethrum: Book Binding [home, info]

Quick definitions from WordNet (Pyrethrum) ▸ noun:  used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum ▸ noun:  white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum ▸ noun:  made of dried flower heads of pyrethrum plants ▸ noun:  spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum