-sporium

noun combining form

-spo·​ri·​um

ˈspōrēəm,

-pȯr-

1

plural -sporia

-ēə

also -sporiums : (such) a coat or layer of a spore wall

endosporium

2

: plant having (such) a spore

—in generic names

Helminthosporium

Word History

Etymology

New Latin, from spora spore + -ium

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now