valve timing
In a piston engine, the precise timing of the opening and closing of the valvesIn a piston engine, the precise timing of the opening and closing of the valves.
Meaning
1 senses(uncountable)In a piston engine, the precise timing of the opening and closing of the valves.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable