How to Say "cochlea" in Spanish
The Spanish word for “cochlea” is “caracol” — C1 level.
English → SpanishC1
nounC1formal
part of the inner ear

Examples
El caracol es una parte fundamental del oído interno.
The cochlea is a fundamental part of the inner ear.
Anatomy Naming
Spanish often uses common animal names for anatomical parts that share a similar shape. Since the inner ear looks like a snail shell, it is simply called 'el caracol'.
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