MARGINAL
adjective. 1 of or written in a margin. 2 a of or at the edge. B insignificant (of merely marginal interest). 3 (of a parliamentary seat etc.) Held by a small majority. 4 close to the limit, esp of profitability. 5 (of land) difficult to cultivate; unprofitable. 6 barely adequate. ? marginally adverb. [medieval latin: related to *margin]