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| a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S. |
| the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language). |
Hirudinea Hir·u·din·e·a (hēr'ə-dĭn'ē-ə, -yə-)
n.
A class of worms, comprising the leeches that feed on blood and tissue exudates of vertebrates.