1. A tabular description of a combinational circuit (such as an AND gate, OR gate, NAND gate), listing all possible states of the input variables together with a statement of the output variable(s) for each of those possible states.
2. A tabular description of a logic operation (such as AND, OR, NAND), listing all possible combinations of the truth values – i.e. true (T) or false (F) – of the operands together with the truth value of the outcome for each of the possible combinations.
"truth table." A Dictionary of Computing. . Encyclopedia.com. (August 15, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/truth-table
"truth table." A Dictionary of Computing. . Retrieved August 15, 2018 from Encyclopedia.com: http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/truth-table