Oi

Oil

An oil is any substance that is in a viscous liquid state at ambient temperatures or slightly warmer, and is both hydrophobic and lipophilic.

Oil Hardening

A process of hardening a ferrous alloy of suitable composition by heating within or above the transformation range and quenching in oil.

Oil Mist

A means of lubricating by injecting oil into an air stream producing a finely atomized spray.

Oil of Bitter Almond

Old name for Benzaldehyde.

Oil of Mirbane

Old name for Nitrobenzene.

Oil of Vitriol

Alternative name for Sulphuric Acid.

Oil Whirl/Whip

An unstable free vibration whereby a fluid-film bearing has insufficient unit loading.

Oilstones

Moulded abrasives in various shapes used to hand-sharpen cutting tools.