We found one dictionary that defines the word variable density wind tunnels:

General (1 matching dictionary)

1. variable-density wind tunnels, variable-density wind tunnels: Collins English Dictionary

▸ Words similar to variable density wind tunnels ▸ Usage examples for variable density wind tunnels ▸ Idioms related to variable density wind tunnels ▸ Wikipedia articles (New!) ▸ Words that often appear near variable density wind tunnels ▸ Rhymes of variable density wind tunnels ▸ Invented words related to variable density wind tunnels