bronchiectasis (n.) Look up bronchiectasis at Dictionary.com
"dilation of the bronchial tubes," 1848, earlier in German, coined in Modern Latin from Greek bronkhia "the bronchial tubes" (see bronchia) + ektasis "a stretching out, extension, dilation," from ek (see ex-) + tasis "a stretching, tension, intensity" (from PIE root *ten- "to stretch").