lubrication
n.the process of adding oil or grease to a machine to help it move smoothly and prevent it from breaking. It also describes the act of making a situation easier or more pleasant for someone.
n.the process of applying a substance to reduce friction between moving parts of a machine; also used figuratively to describe the act of smoothing a social or political situation to make it easier to manage.
“Regular lubrication keeps the engine running smoothly.”
“The technician performed a full lubrication of the gears to prevent them from seizing during the winter months.”
“The diplomat's role was to provide the necessary lubrication for the peace talks, ensuring that both sides could negotiate without the friction of past grievances.”
“Scientists have created an injectable gel that can remain inside arthritic joints for weeks, slowly releasing medication while also improving lubrication.”
From lubricate + -ion.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.