a non-specific way of referring (for example, in recipes, etc) to any edible vegetable oil that might be used in a salad dressing, for example, sunflower oil, peanut oil, olive oil etc
salad oil in American English
noun
an oil used in salad dressing, esp. olive oil or a vegetable oil, as from sesame, corn, or safflower
Word origin
[1550–60]This word is first recorded in the period 1550–60. Other words that entered Englishat around the same time include: coach, haul, network, rhythm, section
Examples of 'salad oil' in a sentence
salad oil
Cooking oil or salad oil, any you have in the kitchen - though not the oil you use on the lawnmower, hah-hah, he said.