The acronym OIS can stand for :
The textspeak phrase "oh I see" (more often OIC)
Optical Image Stabilization (in cameras)
Overnight Indexed Swap (financial transaction)
Organization for internet Safety (trade group)
Officer Involved Shooting (police term)
Office of Information Security (California agency)
le président français (mr François Hollande, for the 2012/2017 period)
fran-ois-couperin
Othman Is Sick (as in awsome)
The cast of Ois Chicago sowieso - 2011 includes: Max Schmidt as Himself - Host
François Mitterand
This app and its questioners are asinine!
21 November 1783,Paris: Jean-François Pilâtre de Rozier and François Laurent d'Arlandes (invented by Montgolfiers).
it ois dependent on other tings like water
hPSDIF Uhaeprxjck
The answer ois 5 + 9/10
Joseph Adhémar.Paul Émile Appell.François Arago.Louis François Antoine Arbogast.Jean-Robert Argand.Léon-François-Antoine Aurifeuille.Léon Autonne.
One possible word is the proper noun, the French writer "Voltaire" (François-Marie Arouet 1694-1778).(*If this is an anagram question, the trivial anagram is revolt.)