Definition of aero- combining form from the Oxford Advanced Learner's Dictionary

 

aero-

 combining form
combining form
BrE BrE//ˈeərəʊ//
 
; NAmE NAmE//ˈeroʊ//
 
 
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(in nouns, adjectives and adverbs) connected with air or aircraft aerodynamic aerospace Word Originfrom Greek aēr ‘air’.
See the Oxford Advanced American Dictionary entry: aero-