spermatid

https://doi.org/10.1351/goldbook.11237

Haploid cell in the late stage of developing into a spermatozoon, derived from the secondary spermatocyte.

Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 806 [Terms] [Paper]