[ vuh-loo-muh-nuhs ]
/ vəˈlu mə nəs /


forming, filling, or writing a large volume or many volumes: a voluminous edition.
sufficient to fill a volume or volumes: a voluminous correspondence.
of great volume, size, or extent: voluminous flow of lava.
of ample size, extent, or fullness: voluminous petticoats.
having many coils, convolutions, or windings.

Origin of voluminous

1605–15; < Late Latin volūminōsus full of folds, equivalent to Latin volūmin- (stem of volūmen) volume + -ōsus -ous

Related forms

Can be confused

compendious voluminous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for voluminous

British Dictionary definitions for voluminous


/ (vəˈluːmɪnəs) /


of great size, quantity, volume, or extent
(of writing) consisting of or sufficient to fill volumes
prolific in writing or speech
obsolete winding

Derived Forms

voluminosity (vəˌluːmɪˈnɒsɪtɪ) or voluminousness, nounvoluminously, adverb

Word Origin for voluminous

C17: from Late Latin volūminōsus full of windings, from volūmen volume
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012