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superaerodynamics

American  
[soo-per-air-oh-dahy-nam-iks, -di-] / ˌsu pərˌɛər oʊ daɪˈnæm ɪks, -dɪ- /

noun

(used with a singular verb)
  1. the branch of aerodynamics that deals with gases at very low densities.


superaerodynamics British  
/ ˌsuːpəˌɛərəʊdaɪˈnæmɪks /

noun

  1. (functioning as singular) the study of aerodynamics at very high altitudes, where the air density is very low

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of superaerodynamics

super- + aerodynamics