An organ such as an antenna that is used for testing things by touch.
- After reaching the maximum point in its excursion, the tactor withdrew from contact.
- The insects carry the antennae directed forwards, and sometimes use them as tactors.
- Tactors are capable of a much more varied perception than we should on the first thought be inclined to suppose.
Early 19th century: from Latin, from tangere 'to touch'.
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