Mindblown: a blog about philosophy.
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Racemic
Optically inactive; used of compounds.
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Racemase
An enzyme that catalyzes racemization (i.e., the production of an optically inactive compound),
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Race
The descendants of a genetically cohesive ancestral group.
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Raccoon sign
Periorbital ecchymosis, which may be present in patients who have a basilar skull fracture.
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Rabies virus group
A genus of viruses whose official designation is Lyssavirus. The virus that causes human rabies is included in this group.
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Rabbetting
Interlocking of the jagged edges of a fractured bone.
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Hazard quotient
A numerical ratio used to estimate whether a toxic exposure will prove harmful to an exposed person or ecosystem. The ratio is typically expressed as the measurable toxic exposure to a screening benchmark, such as the highest concentration of the toxicant known not to cause harm. An HQ greater than 1.0 is potentially toxic. An…
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Achievement quotient
A percentile rating of a child’s score on a test with respect to age, level of education, and peer performance.
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Quota sample
A cohort of research subjects selected because a certain percentage of them has a desired characteristic.
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Quota
A numerical threshold, target, or limit.
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