spermiogenesis

noun

sper·mio·gen·e·sis ˌspər-mē-ō-ˈje-nə-səs

: spermatogenesis

specifically : transformation of a spermatid into a spermatozoon

Word History

Etymology

New Latin, from spermium spermatozoon + -o- + Latin genesis

First Known Use

1916, in the meaning defined above

Time Traveler

The first known use of spermiogenesis was in 1916

See more words from the same year

Cite this Entry

Style

“Spermiogenesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.grautoblog.com/dictionary/spermiogenesis. Accessed 29 Apr. 2026.

Copy Citation

Medical Definition

spermiogenesis

noun

sper·mio·gen·e·sis ˌspər-mē-ō-ˈjen-ə-səs

plural spermiogeneses -ˌsēz

1

: spermatogenesis

2

: transformation of a spermatid into a spermatozoon

More from Merriam-Webster

Word of the Day

speculate

Listen to the pronunciation of speculate

See Definitions and Examples »

Get Word of the Day daily email!

Popular in Grammar & Usage

See More

More Commonly Mispronounced Words

5 Verbal Slip Ups and Language Mistakes

Is that lie 'bald-faced' or 'bold-faced'?

The Difference Between 'i.e.' and 'e.g.'

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

See More

The Longest Long Words List

9 Other Words for Beautiful

Was 'nervous Nellie' a Real Person?

12 Lovely and Unusual Words for the Natural World

Why do we 'bury the lede?'

Popular

See More

More Commonly Mispronounced Words

The Longest Long Words List

9 Other Words for Beautiful