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rheology
rheometer
rheomorphism
rheostat
rheotaxis
rheotropism
Rhesus
rhesus baby
Rhesus factor
rhesus monkey
Rhesus negative
Rhesus positive
rhetoric
rhetorical
rhetorical question
rhetorician
rheum
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Rhesus factor
Rhe·sus fac·tor [ rssəss fáktər ]


noun 
Definition:
 
medicine 
Same as  Rh factor
[Because the antigens were first discovered in the blood of rhesus monkeys]
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