1 Consideration or politeness in dealing with others; diplomacy or skill in handling delicate negotiations.
2 In the writings of the US psychologist B(urrhus) F(rederic) Skinner (1904–90), a verbal utterance that is elicited by an object or event in the external world. It differs from a mand by being under the control of its antecedents rather than its consequences, but some non-Skinnerians have had difficulty understanding the concept. A typical example is the utterance: Hello Hymie!
3 An almost obsolete term for the sense of touch. [From Latin tactus a touching, from tangere to touch]