close to the lower limit of qualification, acceptability, etc or function
representing a slight difference
a marginal improvement
relating to or providing a nominal profit margin
denoting a constituency in which the Member of Parliament was elected with only a small majority
written or printed in the margin
ofrelating to or situated at or in a margin or border
marginality /-ʹnaliti/ noun
marginally adv
[late Latin marginalis from Latin margin-, margo edge]