| andrenid | (noun) a bee that is a member of the genus Andrena | Synonyms: andrena, mining bee |
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| arsenide | (noun) a compound of arsenic with a more positive element | - |
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| ctenidium | (noun) comb-like respiratory structure serving as the gill of certain mollusks | - |
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| euglenid | (noun) marine and freshwater green or colorless flagellate organism | Synonyms: euglenoid, euglenophyte |
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| lycaenid | (noun) any of various butterflies of the family Lycaenidae | Synonyms: lycaenid butterfly |
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| methylphenidate | (noun) central nervous system stimulant (trade name Ritalin) used in the treatment of narcolepsy in adults and attention deficit disorder in children | Synonyms: Ritalin |
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| sciaenid | (noun) widely distributed family of carnivorous percoid fishes having a large air bladder used to produce sound | Synonyms: sciaenid fish |
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| scorpaenid | (noun) any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific | Synonyms: scorpaenid fish |
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