12-Letter Words Containing: D,A,T,I,V,A,L

• as an adjective; in an adjectival manner

• Any quadrivalent chromosome

• Having a valence of four

• (of a vaccine) Protecting against four different (usually flu) viruses.

• Said of a graph: that all of its vertices have degree four.

• poorly adjusted

• the quality of being advisable

• of or relating to or characteristic of a person who is a valetudinarian

• An area that is often the site of vacations, or well suited for vacations.

• establishing as invalid or untrue

• of or relating to the period before the biblical flood

• any of the early patriarchs who lived prior to the Noachian deluge

• a very old person

• so extremely old as seeming to belong to an earlier period