Voluminous (adjective)

1. Large in quantity, amount, or extent; abundant.
2. Having many pages; large in size; bulky.

Origin:

From latin voluminosus, from volumen "roll, volume".

Examples:

1. She had a voluminous knowledge of literature.
2. The report was voluminous, but it contained a lot of useful information.
3. The dress had a voluminous skirt.
4. He wrote a voluminous novel that was 800 pages long.
5. The data set was voluminous and required a lot of processing.