mesosonic

English

Etymology

meso- +‎ sonic

Adjective

mesosonic (not comparable)

1. (aerospace) Describing motion through a two-phase medium, usually electrons and heavy ions, at a speed between the speeds of sound in the two components.
   • 2007, Anders I. Eriksson et al., “Spacecraft wakes in the solar wind”, in Proceedings of the 10th Spacecraft Charging Technology Conference, June 18-21, 2007‎^[1]:

     In space plasmas, spacecraft usually encounter mesosonic flows, i.e. flows which are supersonic with respect to the ion thermal speed, but subsonic with respect to the electron thermal speed.