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ituted, or with which it can be compared; thus, an atom of hydrogen is a monad, and has a valence of one; the atoms of oxygen, nitrogen, and carbon are respectively dyads, triads, and tetrads, and have a valence respectively of two, three, and four.

being equivalent or equal; equality of worth, value, signification, or force; as, an equivalence of definitions.

Want of prevalence. [Obs.]

Quality, state, or degree, of a multivalent element, atom, or radical.

orce, or influence; general existence, reception, or practice; wide extension; as, the prevalence of virtue, of a fashion, or of a disease; the prevalence of a rumor. The duke better knew what kind of argument were of prevalence with him. Clarendon.

The quality or state of being quadrivalent; tetravalence.

Valence. [Archaic]

The quality or state of being tetravalent; quadrivalence.

The quality or state of being trivalent.

The quality or state of being univalent.

ntimony; -- said of those compounds of antimony in which this element has its highest equivalence; as, antimonic acid.

d from, antimony; -- said of those compounds of antimony in which this element has an equivalence next lower than the highest; as, antimonious acid.

arsenic; -- said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid.

Pertaining to, or derived from, arsenic, when having an equivalence next lower than the highest; as, arsenious acid.

Even; not odd; -- said of elementary substances and of radicals the valence of which is divisible by two without a remainder.

Degree of atomic attraction; equivalence; valence; also (a later use) the number of atoms in an elementary molecule. See Valence.

rived from, gold; -- said of those compounds of gold in which this element has its higher valence; as, auric oxide; auric chloride.

erived from, gold; -- said of those compounds of gold in which this element has its lower valence; as, aurous oxide.

Of or pertaining to bismuth; containing bismuth, when this element has its higher valence; as, bismuthic oxide.

Of, or containing, bismuth, when this element has its lower valence.