Rh-positive blood type
- noun
- /ɑr-eɪtʃ ˈpɑzɪtɪv blʌd taɪp/
- Specialized
- About 85% of the population has Rh-positive blood type, making it the most common.
Examples
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It is especially important to know if a pregnant woman has an Rh-positive blood type.
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All donors with Rh-positive blood type are compatible with recipients who are Rh positive.
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I have Rh-positive blood type.
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The Rh-positive blood type is crucial for transfusions.
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Approximately 85% of people have an Rh-positive blood type, which is essential for blood transfusions.
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Pregnant women must check their Rh-positive blood type to avoid complications during pregnancy.
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Individuals with an Rh-positive blood type can donate blood to anyone who is Rh positive.
Surface Forms
Morphology
Rh-positive + blood + type
This is a straightforward compositional noun phrase: the adjective 'Rh-positive' specifies the kind of 'blood type', so the meaning 'a blood type carrying the Rh factor' is directly derivable from the constituents. The structure and logic are literal and common in medical descriptions (and paralleled in many languages), so a learner who knows the parts would understand the MWE.
Etymology
Rh-positive blood type comes from early medical tests using blood from a Rhesus monkey, because scientists found a small marker on some people's red cells and named that marker Rh after the monkey. The word positive means the marker is 'present', so the name shows the blood 'has' the Rh factor.