gonad (n.), gonadal (adj.)

https://doi.org/10.1351/goldbook.10775

Organ in animals that produces gametes, i.e., the testis or the ovary.

Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 761 [Terms] [Paper]