voluminous

Of or pertaining to volume or volumes.

Adjective

Of or pertaining to volume or volumes.
Consisting of many folds, coils, or convolutions.
- I remember that the Baroness was clad in a voluminous silk dress, pale grey in colour, and adorned with flounces and a crinoline and train. - 1867, Fyodor Dostoyevsky, chapter VI, in The Gambler, translated by C. J....
- Like the Cuscus of the Moluccas, the Galeopithecus feeds chiefly on leaves, and possesses a very voluminous stomach and long convoluted intestines. The brain is very small, and the animal possesses such remarkable...
Of great volume, or bulk; large.
- Matters of a much more extraordinary kind are to be the subject of this history, or I should grossly mis-spend my time in writing so voluminous a work […] - 1749, Henry Fielding, The History of Tom Jones, a Foundling:
Synonyms: capacious
Having written much, or produced many volumes.
- a voluminous writer
Synonyms: copious diffuse

From Late Latin voluminosus, from volumen, from volvō (“roll, turn about”) + -men (noun-forming suffix). Related to volume.