Q. What do you mean by Ordinal utility?

A method of analysing utility or satisfaction derived from consumption of services andgoods, based on a relative ranking of services and goods consumed. With ordinal utility goods are just ranked only in terms of more or less preferred, there isn't any attempt to determine how much more one good is preferred to another. Ordinal utility is underlying assumption employed in analysis of indifference curves and must be compared with cardinal utility that (hypothetically) measures utility using a quantitative scale.