An example of convection used as an adjective is the phrase convection oven which means an oven that blows lower temperature air directly onto the food.
An example of convection is the moving of liquid.
Origin of convection
- Late Latin convectiō convectiōn- from convectus past participle of convehere to carry together Latin com- com- Latin vehere to carry wegh- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Latin convectionem, from convectio (“act of carrying”), from convect-, past participle of convehere (“to carry together”), combination of com- and vehere.