Marginal

adj. peripheral, close to the limits; minimal, slight; of or pertaining to a margin; written in the margin of a page

The word marginal can refer to several things:For marginal probability in probability theory, see Conditional probabilityFor marginal model in hierarchical linear modeling, see Marginal modelFor marginal observables in physics, see Renormalization groupFor marginal constituency in politics, see ConstituencyFor marginal utility/cost/revenue in economics, see MarginalismFor marginal person in sociology, see Marginalization
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Adjective
1. at or constituting a border or edge; "the marginal strip of beach"
(synonym) fringy
(similar) peripheral
2. of questionable or minimal quality; "borderline grades"; "marginal writing ability"
(synonym) borderline
(similar) minimal, minimum
3. of a bare living gained by great labor; "the sharecropper's hardscrabble life"; "a marginal existence"
(synonym) hardscrabble
(similar) meager, meagre, meagerly
4. just barely adequate or within a lower limit; "a bare majority"; "a marginal victory"
(synonym) bare(a)
(similar) narrow
5. producing at a rate that barely covers production costs; "marginal industries"; "marginal land"
(similar) unprofitable
6. of something or someone close to a lower limit or lower class; "marginal abilities"
(similar) disapproved

adj. marginal, peripheral, close to the limits; minimal, slight; of or pertaining to a margin; written in the margin of a page

adj. marginal, peripheral

n. dropout, withdrawing from school or from a course prior to completion, student who quits school before completing his studies