2. (Math.)

Defn: Any character used to represent a quantity, an operation, a relation, or an abbreviation.

Note: In crystallography, the symbol of a plane is the numerical expression which defines its position relatively to the assumed axes.

3. (Theol.)

Defn: An abstract or compendium of faith or doctrine; a creed, or a summary of the articles of religion.

4. Etym: [Gr.

Defn: That which is thrown into a common fund; hence, an appointed or
accustomed duty. [Obs.]
They do their work in the days of peace . . . and come to pay their
symbol in a war or in a plague. Jer. Taylor.

5. Share; allotment. [Obs.] The persons who are to be judged . . . shall all appear to receive their symbol. Jer. Taylor.

6. (Chem.)

Defn: An abbreviation standing for the name of an element and consisting of the initial letter of the Latin or New Latin name, or sometimes of the initial letter with a following one; as, C for carbon, Na for sodium (Natrium), Fe for iron (Ferrum), Sn for tin (Stannum), Sb for antimony (Stibium), etc. See the list of names and symbols under Element.