The Collaborative International Dictionary of English v.0.48:

Telemetry \Te*lem"e*try\, n.
   The science or process of making remote measurements and
   sending the data by radio; the use of a telemeter.
   [PJC]

WordNet (r) 3.0 (2006):

telemetry
    n 1: automatic transmission and measurement of data from remote
         sources by wire or radio or other means

Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "telemetry":
   appraisal, appraisement, approximation, assessment, assize,
   assizement, bioinstrumentation, calculation, computation,
   correction, determination, estimate, estimation, evaluation,
   gauging, instrumentation, measure, measurement, measuring,
   mensuration, metric system, missilery, push-button control,
   quantification, quantization, radio control, rating,
   remote control, remote handling, rocketry, semiautomatic control,
   survey, surveying, telemechanism, telemeter, telemetering,
   transponder, triangulation, valuation