2 ms·

Fluid is a Latin root, so why not "fluidostat" on the model of "aerostat"?

• 4gotunameagain 3y ago
  because -stat is a Greek root. merriam-webster borrowed from French aérostat, probably back-formation from aérostatique "of aerostatics," with -stat (after héliostat heliostat) taken as the Greek agentive element -statēs "one who causes to stand" — more at -stat