solid oxide fuel cell (SOFC)

Proton Exchange Membrane Fuel Cell (PEM fuel cell, PEMFC)

solid-propellant rocket (solid-fuel rocket)

Complementary metal–oxide–semiconductor (CMOS) / Complementary-symmetry/metal-oxide semiconductor

solid acid fuel cell (SAFC)

solid fuel

Firedragon (solid fuel)

fuel cell (FC)

alkaline fuel cell (AFC)

direct methanol fuel cell (DMFC)

sodium oxide

oxide

sulfur oxide SOx

black oxide

nitrogen oxide (NOx)

nitrous oxide (N2O)

metal-oxide-silicon

metal-oxide-silicon integrated circuit

multilayer aluminum-silicon oxide-silicon dioxide combination

tin oxide

zinc-oxide lightning arrester

thermal oxide

solid masonry structure

solid propellant

solid-propellant charge

solid-propellant rocket engine / motor

two-stage solid-propellant ballistic vehicle

solid rocket motor

solid retention time

all-solid launch aeroballistic

unguided solid propellant rocket

strap-on solid motors

lubricant solid film