English Reference

Word

tome

US/ˈtoʊm/

UK/tˈəʊm/

Definitions

01a large, heavy book

C2 · Proficiency Countable noun Formal · Literary

n. a very large, thick, or heavy book, usually one that is serious or academic.

n. a large, heavy, or scholarly book. Often used to imply the work is physically imposing or intellectually dense.

“He pulled a dusty, leather-bound tome from the top shelf of the library.”

“The professor spent decades compiling his research into a massive tome that few students had the stamina to read in its entirety.”

Usage

Usually used as a countable noun.

Teaching tip

This word is often used with a touch of irony to describe a book that is unnecessarily long or difficult to carry.

Antonyms

02one volume of a series

C2 · Proficiency Countable noun Archaic · Technical

n. one specific book in a series of several related books.

n. one volume of a larger work consisting of several volumes. This sense reflects the word's etymological roots meaning 'a cutting' or 'section'.

“The first tome of the encyclopedia covers everything from A to C.”

“The historian consulted the third tome of the series to verify the dates of the late medieval treaties.”

Usage

In modern English, 'volume' is almost always preferred for this meaning.

Real-World Examples

“What if the challenging complexity and political engagement of his tomes are exactly what’s needed?”
The Conversation 24 Aug 2026
“Secondhand booksellers in the UK and Ireland are reporting a flurry of bulk orders from mystery buyers, amid speculation AI companies are acquiring the tomes for their data.”
The Guardian 15 Aug 2026

Etymology

From Middle French tome, from Latin tomus (“section of larger work”), from Ancient Greek τόμος (tómos, “section, roll of papyrus, volume”), from τέμνω (témnō, “I cut, separate”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Related words

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C2 ProficiencyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.8.5–9.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 6.0114–120
Frequency
Frequent
Level
C2 · Proficiency
Updated

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English Reference