: a family of double-stranded DNA viruses shaped like a 20-sided polyhedron, originally identified in human adenoid tissue, causing infections (as pharyngoconjunctival fever) of the respiratory system, conjunctiva, and gastrointestinal tract, and including some capable of inducing malignant tumors in experimental animals
Love words? Need even more definitions?Merriam-Webster unabridged
See Definitions and Examples »
Get Word of the Day daily email!
Words at Play
Palter, Dissemble, and Other Words for Lying
Skunk, Bayou, and Other Words with Native American Origins
You've used more than you might think
Words For Things You Didn't Know Have Names, Vol. 2
When 'thingamajig' and 'thingamabob' just won't do
When Were Words First Used?
Look up any year to find out
Ask the Editors