having or containing a large volume or quantity; very large
said of a piece of clothing: very full; having a lot of material
a voluminous ball gown
consisting of, filling, or being enough to fill, a large volume or several volumes
It took ten years to publish her voluminous correspondence
writing much or at great length
voluminosity /-ʹnositi/ noun
voluminously adv
voluminousness noun
[late Latin voluminosus, from Latin volumin-, volumen: see volume]