sio

Extreme sexy beastly mf

Man, Sio gives off such a big dick, dilf energy!

Sio

Easy word to express agreement with something or simply saying yes/probably.

Mom - "Are you OK?"
Son - "Sio."

SIO

senior investigating officer

a british police rank rank held by a police officer (DCI at minimum), who leads a major investigation (e.g.:murder)

Who is the SIO of this murder taskforce? It's DCI Peter Banks.
Who's in charge of this murder investigation? DCI Harold Crowly is the SIO. Talk to him.

SiO₂

sand; glass; quartz; amethyst; silica; silicon dioxide.

People, go build a SiO₂-castle.