Impeding Force That Slows a Supersonic Aircraft
This page is the CodyCross answer for the clue below from Café, Group 1325, Puzzle 4 (Meeting Friends).
Question is: Impeding Force That Slows a Supersonic Aircraft
and the answer is: WAVEDRAG
Word Meaning:
WAVE DRAG — (aerodynamics) Drag resulting from shock wave formation at transonic and supersonic speeds.
Definitions from Wiktionary.