| arccosecant | (noun) the angle that has a cosecant equal to a given number | Synonyms: arc cosecant, inverse cosecant |
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| attosecond | (noun) one quintillionth (10^-18) of a second; one thousandth of a femtosecond | - |
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| callosectomy | (noun) severing the corpus callosum so that communication between the cerebral hemispheres is interrupted (in cases of severe intractable epilepsy) | Synonyms: callosotomy |
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| cosec | (noun) ratio of the hypotenuse to the opposite side of a right-angled triangle | Synonyms: cosecant |
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| cosecant | (noun) ratio of the hypotenuse to the opposite side of a right-angled triangle | Synonyms: cosec |
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| femtosecond | (noun) one quadrillionth (10^-15) of a second; one thousandth of a picosecond | - |
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| microsecond | (noun) one millionth (10^-6) of a second; one thousandth of a millisecond | - |
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| nanosecond | (noun) one billionth (10^-9) of a second; one thousandth of a microsecond | - |
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| nosecount | (noun) a periodic count of the population | Synonyms: census, nose count |
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| picosecond | (noun) one trillionth (10^-12) of a second; one thousandth of a nanosecond | - |
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| prosecute | (verb) bring a criminal action against (in a trial) | - |
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| (verb) conduct a prosecution in a court of law | - |
| (verb) carry out or participate in an activity; be involved in | Synonyms: engage, pursue |
| prosecution | (noun) the institution and conduct of legal proceedings against a defendant for criminal behavior | Synonyms: criminal prosecution |
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| (noun) the continuance of something begun with a view to its completion | Synonyms: pursuance |
| (noun) the lawyers acting for the state to put the case against the defendant | - |
| prosecutor | (noun) a government official who conducts criminal prosecutions on behalf of the state | Synonyms: prosecuting attorney, prosecuting officer, public prosecutor |
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| vasosection | (noun) surgical incision into or division of the vas deferens | Synonyms: vasotomy |
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