| diethylmalonylurea | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, barbitone, diethylbarbituric acid, veronal |
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| diethylstilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, stilbesterol |
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| diethylstilbestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilboestrol, stilbestrol, stilboestrol |
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| diethylstilboestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilbestrol, stilbestrol, stilboestrol |
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| eightieth | (adjective) the ordinal number of eighty in counting order | Synonyms: 80th |
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| (noun) position 80 in a countable series of things | - |
| fiftieth | (adjective) the ordinal number of fifty in counting order | Synonyms: 50th |
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| (noun) position 50 in a countable series of things | - |
| fortieth | (adjective) the ordinal number of forty in counting order | Synonyms: 40th |
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| (noun) position 40 in a countable series of things | - |
| multiethnic | (adjective) involving several ethnic groups | Synonyms: multi-ethnic |
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| ninetieth | (adjective) the ordinal number of ninety in counting order | Synonyms: 90th |
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| (noun) position 90 in a countable series of things | - |
| seventieth | (adjective) the ordinal number of seventy in counting order | Synonyms: 70th |
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| (noun) position 70 in a countable series of things | - |
| sixtieth | (adjective) the ordinal number of sixty in counting order | Synonyms: 60th |
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| (noun) one part in sixty equal parts | Synonyms: one-sixtieth |
| (noun) position 60 in a countable series of things | - |
| thirtieth | (adjective) coming next after the twenty-ninth in position | Synonyms: 30th |
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| (noun) position 30 in a countable series of things | - |
| twentieth | (adjective) coming next after the nineteenth in position | Synonyms: 20th |
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| (noun) position 20 in a countable series of things | - |
| umptieth | (adjective) last in an indefinitely numerous series | Synonyms: umpteenth, umteenth |
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