What does the filmmaking abbreviation M.O.S. mean?

So confusing

ohh jeeze. WTH??

Wow! I totally missed it, used majority vote and it was wrong!!

This question has the same logic as for example/instance According to Periodic Table of Elements, W is for element Tungsten. That logic is applied to this question. Therefore MOS cannot be Montage of Sound

Player #1147652, me too every time.

FlowerPower67, using the 50/50 option not only cost less coins but gives one a greater chance of getting the correct answer. this has been our experience in playing this game.

missed it