human papillomavirus

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various strains of papovavirus that cause warts, especially of the hands, feet, and genitals, with some strains believed to be a causative factor in cancer of the cervix, vagina, and vulva.

Wiktionary

1. n. A virus that affects humans, sometimes causing cervical or other cancer; it is sometimes classified as a sexually transmitted disease.