lean mixture

lean mixture

[′lēn ¦miks·chər] (mechanical engineering) A fuel-air mixture containing a low percentage of fuel and a high percentage of air, as compared with a normal or rich mixture. Also known as lean fuel mixture.

lean mix, lean mixture

1. A concrete or mortar mixture with relatively low cement content. 2. A plaster which is not workable.

lean mixture

A fuel-air mixture where the fuel-air ratio is less than 1:15. See air-fuel mixture ratio.