gapful adjective 1noun 1forms 1 adjective1 •Having gaps; not gapless.In the non-relativistic limit, the both types of accompanied gapful modes become infinitely massive, disappearing from the spectrum. — 2015 noun1 •A quantity that fills a gap.The structural features of deposits, such as loosened, broken gapfuls between large boulders or segments of isolated rock masses. — 1985 formsgapfuls