'Marginally' definitions:

Definition of 'marginally'

From: WordNet
adverb
In a marginal manner; "marginally interesting"

Definition of 'Marginally'

From: GCIDE
  • Marginally \Mar"gin*al*ly\, adv.
  • 1. In the margin of a book. [1913 Webster]
  • 2. In a marginal[3] manner; barely sufficiently; almost not; as, marginally useful. [PJC]