turbulent/turbulence, subsonic, sonic, supersonic, hypersonic, chronoscope, chronograph, chronometer, incendiary, whirlpool, maelstrom, pinion, stalactite, stalagmite, dynamo, nitroglycerine, flint, ultramarine blue, submarine, superimposed, battle stations, quicksilver, jackscrew, ballast, stern, prow, astern, lathe, prismarine, amazonite, microcline, pneumatic, hypoxia, asphalt, bitumen, corrosive, corrosion, fibreglass,