How to Say "gonad" in Spanish
The Spanish word for “gonad” is “testículo” — B1 level.

Examples
El médico explicó que el testículo está sano.
The doctor explained that the testicle is healthy.
Es importante realizarse un autoexamen de testículo cada mes.
It is important to perform a testicle self-exam every month.
Los testículos son responsables de producir testosterona.
The testicles are responsible for producing testosterone.
Always Masculine
This word ends in -o and is always masculine. You must use 'el' or 'un' with it: 'el testículo'.
Making it Plural
To talk about both, just add an -s to the end: 'los testículos'.
The 'Polite' Term
Mistake: “Using 'huevos' in a doctor's office.”
Correction: Use 'testículo' in professional settings. 'Huevos' is very informal and can be considered vulgar or rude depending on the situation.
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