nonavalent

English

Etymology

nona- +‎ -valent

Adjective

nonavalent (not comparable)

1. (chemistry) Having an atomic valence of 9.
2. (medicine) Having a vaccine valence of 9.
   • 2015 April 2, Anna-Lise Williamson, Jane Grant-Kels, “The Interaction between Human Immunodeficiency Virus and Human Papillomaviruses in Heterosexuals in Africa”, in Journal of Clinical Medicine‎^[1], volume 4, →DOI:

     The Merck nonavalent HPV vaccine that is currently being tested would be better than both of these, because it protects from infection from 9 HPV types but would still not impact on all HPV types.