spermatids

/S P ER1 M AH0 T IH0 D Z/
noun
  1. 1

    A haploid cell, produced by meiosis of a spermatocyte, that develops into a spermatozoon

Source: https://en.wiktionary.org/wiki/spermatid, https://en.wiktionary.org/wiki/spermatids