| acetyl | (noun) the organic group of acetic acid (CH3CO-) | Synonyms: acetyl group, acetyl radical, ethanoyl group, ethanoyl radical |
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| artiodactyl | (noun) placental mammal having hooves with an even number of functional toes on each foot | Synonyms: artiodactyl mammal, even-toed ungulate |
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| butyl | (noun) a hydrocarbon radical (C4H9) | - |
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| dactyl | (noun) a finger or toe in human beings or corresponding body part in other vertebrates | Synonyms: digit |
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| (noun) a metrical unit with stressed-unstressed-unstressed syllables | - |
| perissodactyl | (noun) placental mammals having hooves with an odd number of toes on each foot | Synonyms: odd-toed ungulate, perissodactyl mammal |
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| pterodactyl | (noun) extinct flying reptile | - |
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