positioner positioned • positionless · · · Info · Definitions · Synonyms · Characters · · positioner · · Text Latin · · Script 10 · · Length Definitions · · · (noun) (computer science) the actuator that moves a read/write head to the proper data track. Synonyms: rotary actuator. · · Noun Definition 1 Synonyms · · · rotary actuator · · Synonym 1 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074