| acetanilid | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilide, phenylacetamide |
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| machilid | (noun) wingless insect living in dark moist places as under dead tree trunks; they make erratic leaps when disturbed | Synonyms: jumping bristletail |
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| mytilid | (noun) marine bivalve mollusk having a dark elongated shell; live attached to solid objects especially in intertidal zones | Synonyms: marine mussel |
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| symphilid | (noun) minute arthropod often infesting the underground parts of truck-garden and greenhouse crops | Synonyms: garden centipede, garden symphilid, Scutigerella immaculata |
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