Pyrethrum
Chamber's Twientieth Century Dictionary · 1908 · p. 83
pir-eth′rum, n. a genus of plants containing the fever-few, or golden-feather, so much used in gardens as a bordering. [L.,—Gr.,— pyr , fire.]
Bu kavram başka kaynaklarda da geçiyor
Stedman's Medical Dictionary: A Practical Medical Dictionary (1920)
The American Illustrated Medical Dictionary (1913)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The Student's Medical Dictionary (1896)
An Illustrated Encyclopedic Medical Dictionary (1894)
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