Machmeter

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  machmeter \machmeter\ n.
     an instrument for measuring the speed of an aircraft relative
     to the speed of sound.
     [WordNet 1.5]

From WordNet (r) 2.0 [wn]:



  machmeter
       n : speedometer for measuring the speed of an aircraft relative
           to the speed of sound