vəˈlümənəs also vəlˈyü- adjective
Etymology: Late Latin voluminosus full of folds, from Latin volumin-, volumen roll of writing, book + -osus -ose — more at volume
1. : of or relating to volume
2. : winding or full of windings : consisting of many folds, coils, or convolutions
3.
a. : having or marked by great volume : bulky , large , swelling
her extremely fair hair very voluminous and noticeable — F.M.Ford
a voluminous Negress held him by the hand — P.L.Fermor
in song, where a more voluminous output of air is customary — C.H.Grandgent
his chin sunk in a billow of his voluminous white shirt front — Haldane Macfall
specifically : full
a voluminous nightgown of outing flannel — Adria Langley
coats are voluminous but hang in nice straight lines — Lois Long
b. : seeming to fill a large indefinite space
critic who described her voice as “fresher, freer, and firmer … more under control and more voluminous at the full” — Current Biography
c. : numerous
it is more work to keep track of voluminous pink slips than to spend occasional checks — Joanne Wheeler
4.
a. : filling or capable of filling a large volume or several volumes
a voluminous correspondence
voluminous evidence
voluminous notes
a voluminous report
b. : consisting of or containing many volumes
a voluminous publication
c. : writing or speaking much or at great length
a voluminous and energetic writer of letters, memoranda, and diaries — J.T.Flexner
• vo·lu·mi·nous·ly adverb
• vo·lu·mi·nous·ness noun -es