say it: er-oh-dahy-NAM-iks
aerodynamics is a noun meaning "the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow". It carries one recorded sense.
the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for aerodynamics come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.