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| an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language. |
| 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. |
| pedogenesis (pěd'ə-jěn'ĭ-sĭs) Pronunciation Key
The process whereby soil forms from unconsolidated rocks. |
pedogenesis
reproduction by sexually mature larvae, usually without fertilization. The young may be eggs, such as are produced by Miastor, a genus of gall midge flies, or other larval forms, as in the case of some flukes. This form of reproduction is distinct from neotenic reproduction in its parthenogenetic nature (i.e., no fertilization occurs) and the eventual maturation or metamorphosis of the parent organism into its adult form
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