English Reference

Word

lobe

US/ˈɫoʊb/

UK/lˈəʊb/

Definitions

01part of an organ

B2 · Upper Intermediate Countable noun Medicine Technical

n. a specific section of an organ in the body, such as the brain, lungs, or liver.

n. a distinct, anatomically defined division of an organ, identifiable at the gross anatomy level.

“The doctor explained that the tumor was located in the lower lobe of the right lung.”

“Damage to the frontal lobe can result in significant changes to a person's personality and executive functioning capabilities.”

Usage

Often used with specific anatomical modifiers like 'frontal', 'temporal', or 'pulmonary'.

02earlobe

B2 · Upper Intermediate Countable noun Medicine

n. the soft, fleshy part at the bottom of your ear.

n. the soft, pendulous lower part of the external ear.

“She felt a sharp pinch when the jeweler pierced her left lobe.”

“The heavy gold earrings caused her lobes to stretch slightly over several years of frequent wear.”

Synonyms

earlobe

03rounded projection

C1 · Advanced Countable noun Technical

n. any rounded part that sticks out from the main body of something.

n. a rounded projection or division of a leaf, a tool, or a physical object.

“The oak leaf has several rounded lobes along its edges.”

“The cam was designed with a specific lobe shape to ensure the valve opened at precisely the right moment in the cycle.”

Synonyms

projectionbulgeprotrusion

Real-World Examples

“These lobes are packed with touch-sensitive nerve endings and can detect even the smallest movements in the surrounding water.”
Phys.org 5 Oct 2026
“These lobed leaves often have intricate, serrated edges.”
ScienceDaily 30 Jul 2026

Etymology

From Middle French lobe in early 16th century, from New Latin lobus (“a lobe”), from Ancient Greek λοβός (lobós, “the lobe of the ear or of the liver, the pod of a leguminous plant”).

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

Domain

Anatomy

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.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL 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: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Frequent
Level
C1 · Advanced
Updated

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English Reference