: a herpesvirus (Simplexvirus humanalpha1) that is mostly spread by oral contact and causes the type of herpes simplex typically involving the lips, mouth, and face
Cite this Entry
“HSV-1.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/HSV-1. Accessed 6 Dec. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share