tome

One of the books in a work of several volumes.

A book, especially a large or scholarly one.

A volume forming a part of a larger work; any volume, especially a ponderous one.

⟨ See toom.

As many writings as are bound in a volume, forming part of a larger work; a book; — usually applied to a ponderous volume.

One in a series of volumes.

A large or scholarly book.

a (usually) large and scholarly book