From nona- + -valent. <span class="searchmatch">nonavalent</span> (not comparable) English Wikipedia has an article on: valence (chemistry) Wikipedia (chemistry) Having an atomic valence...
heptavalent hexadecavalent hexavalent hypervalent monovalent multivalent <span class="searchmatch">nonavalent</span> paucivalent pentavalent polyvalent prevalent quadrivalent quinquevalent...
nonasilver nonastrontium nonasulfide nonasulphide nonasyllabic nonatitanate <span class="searchmatch">nonavalent</span> nonagenarian nonagon nonahedron nonahydridorhenate nonane nonanoic nonary...