| Re | Reynolds number |
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| Reynolds pentad | Abdominal pain, fever, jaundice, shock, and depression of central nervous system function; usually indicative of acute suppurative cholangitis. (05 Mar 2000) |
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| pentad | <chemistry> Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds. Origin: Gr, a body of five, fr. Five. <chemistry> Having the valence of a pentad. Source: Websters Dictionary (01 Mar 1998) |
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| Reynolds number | A dimensionless number that describes the tendency for a flowing fluid, such as blood, to change from laminar flow to turbulent flow or vice versa. (05 Mar 2000) |
| Reynolds, Osborne | <person> English physicist, 1912- See: Reynolds number. (05 Mar 2000) |
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