stomodeum

1 of 2

noun

sto·​mo·​de·​um ˌstō-mə-ˈdē-əm How to pronounce stomodeum (audio)
variants or less commonly stomodaeum
plural stomodea ˌstō-mə-ˈdē-ə How to pronounce stomodeum (audio) also stomodaea ˌstō-mə-ˈdē-ə How to pronounce stomodeum (audio)
: the embryonic anterior ectodermal part of the digestive tract
stomodeal adjective
or less commonly stomodaeal

stomodeal

2 of 2

adjective

sto·​mo·​de·​al
variants or less commonly stomodaeal
: of, relating to, or derived from a stomodeum

Word History

Etymology

Noun

New Latin, from Greek stoma mouth + hodaion, neuter of hodaios being on the way, from hodos way

Adjective

New Latin stomodaeum, stomodeum + English -al

First Known Use

Noun

1876, in the meaning defined above

Time Traveler
The first known use of stomodeum was in 1876

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Cite this Entry

“Stomodeum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stomodeum. Accessed 10 Jun. 2026.

Medical Definition

stomodeum

noun
sto·​mo·​de·​um
variants or stomodaeum
plural stomodea -ˈdē-ə How to pronounce stomodeum (audio) or stomodaea -ˈdē-ə How to pronounce stomodeum (audio) also stomodeums or stomodaeums
: the embryonic anterior ectodermal part of the digestive tract
stomodeal adjective
or stomodaeal
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