| AMBIVALENT | • ambivalent adj. Simultaneously experiencing or expressing opposing or contradictory feelings, beliefs, or motivations. • ambivalent adj. Alternately having one opinion or feeling, and then the opposite. • AMBIVALENT adj. having conflicting emotional attitudes towards the same object. | 
| BIOEQUIVALENT | • bioequivalent adj. Describing the equivalence of multiple formulations of a drug in terms of bioavailability. • bioequivalent n. A formulation of a drug that is equivalent, in terms of bioavailability, to some other formulation. | 
| BIVALENT | • bivalent adj. (Chemistry) Having a valence of 2; having two ligands. • bivalent adj. (Genetics) Of, or relating to a pair of homologous synapsed chromosomes that occur during meiosis. • bivalent adj. (Of a vaccine) Protecting against two different viruses. | 
| DIVALENT | • divalent adj. (Chemistry) Having an atomic valence of 2. • divalent adj. (Medicine) Having a vaccine valence of 2. • divalent n. (Chemistry) Any divalent substance. | 
| EQUIVALENT | • equivalent adj. Similar or identical in value, meaning or effect; virtually equal. • equivalent adj. (Mathematics) Of two sets, having a one-to-one correspondence. • equivalent adj. (Mathematics) Relating to the corresponding elements of an equivalence relation. | 
| MULTIVALENT | • multivalent adj. (Chemistry) Having more than one valency or having a valency greater than 3; polyvalent. • multivalent adj. (Genetics) Having three or more homologous chromosomes during the first division of meiosis. • multivalent adj. (Immunology) Having more than one attachment site for an antibody or antigen. | 
| NONEQUIVALENT | • nonequivalent adj. Not equivalent; different. • NONEQUIVALENT adj. not equivalent. | 
| QUADRIVALENT | • quadrivalent adj. (Chemistry) Having a valence of four. • quadrivalent adj. (Of a vaccine) Protecting against four different (usually flu) viruses. • quadrivalent adj. (Graph theory) Said of a graph: that all of its vertices have degree four. | 
| QUANTIVALENT | • quantivalent adj. (Chemistry, archaic) Of or pertaining to quantivalence, or valence. • QUANTIVALENT adj. relating to quantivalence, valency. | 
| QUINQUIVALENT | • quinquivalent adj. (Chemistry) Having an atomic valence of 5. • quinquivalent adj. (Medicine) Having a vaccine valence of 5. • QUINQUIVALENT adj. having a valency of five, also QUINQUEVALENT. | 
| SEPTIVALENT | • septivalent adj. (Chemistry) heptavalent. • SEPTIVALENT adj. having a valency of seven, also HEPTAVALENT, SEPTAVALENT. | 
| SEXIVALENT | • sexivalent adj. (Chemistry) hexavalent. • SEXIVALENT adj. of a valency of six, also SEXVALENT. | 
| TRIVALENT | • trivalent adj. (Inorganic chemistry) Having a valence of three. • trivalent adj. (Of a vaccine) Protecting against three different (usually flu) viruses. • trivalent n. (Genetics) Any trivalent chromosome. | 
| UNAMBIVALENT | • unambivalent adj. Not ambivalent. • UNAMBIVALENT adj. not ambivalent. | 
| UNIVALENT | • univalent adj. (Chemistry) Having an atomic valence of 1, or having only one valence. • univalent adj. (Medicine) Having a vaccine valence of 1. • univalent adj. (Genetics) Of, or relating to, a chromosome that is not paired with its homologous chromosome during synapsis. |