marginal

the cost of producing one more unit of a good

a very small or slight effect

a very small or slight impact

the additional profit from producing one more unit

a very small or slight change

a political seat that is won by a very small number of votes

a very small or slight improvement

a political area where a politician was elected by a very small number of votes

land that is not very fertile or useful for farming

of very little importance

of very little relevance

a note written in the margin of a book or document

an area at the edge that has specific, often poor, characteristics