cecidium

noun

ce·​cid·​i·​um

sə̇ˈsidēəm,

sēˈ-

plural cecidia

-ēə

: gall

especially : one caused by insects or mites

—used especially in combinations

acarocecidium

zoocecidium

Word History

Etymology

New Latin, from Greek kēkidion, diminutive of kēkid-, kēkis anything gushing out, dye, oak gall; akin to Old English hengest stallion, Old High German hengist, Old Norse hestr, Welsh caseg mare, Lithuanian šokti to leap, dance

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