English Reference

Word

capsule

Phoneticscap·sule, stress on the first syllable

US/ˈkæpsəɫ/

UK/kˈæpsjuːl/

Definitions

01medicine

B2 · Upper Intermediate Countable noun Medicine

n. a small, easy-to-swallow container that holds a dose of medicine.

n. a small, soluble container, usually made of gelatin, enclosing a dose of an oral medication.

“The doctor told her to take one capsule with water every morning.”

“The pharmacist explained that the time-release capsule would gradually dispense the medication into the bloodstream over twelve hours.”

Synonyms

02spacecraft

B2 · Upper Intermediate Countable noun

n. the part of a rocket where people live and work during a flight.

n. a small, pressurized compartment of a spacecraft designed to support a crew and return to Earth.

“The astronauts climbed into the capsule and prepared for the long journey.”

“After re-entering the atmosphere, the space capsule deployed three massive parachutes to slow its descent before splashing down in the ocean.”

Synonyms

03botany

C1 · Advanced Countable noun Science Technical

n. the part of a plant that holds and protects its seeds.

n. a dry fruit that opens when ripe to release seeds, typical of plants like poppies or lilies.

“The poppy capsule dried out and eventually scattered its seeds in the wind.”

“The botanist examined the dehiscent capsule under a microscope to determine how the seeds were dispersed during the dry season.”

Synonyms

seedpodcase

04anatomy

C1 · Advanced Countable noun Medicine Technical

n. a thin layer of tissue that covers and protects an organ in the body.

n. a tough, fibrous or membranous envelope surrounding an organ, such as the kidney or a joint.

“The surgeon was careful not to damage the capsule surrounding the kidney.”

“Inflammation of the joint capsule can lead to significant pain and restricted movement in elderly patients.”

Synonyms

05brief summary

C2 · Proficiency Countable noun Formal

n. a very short and clear description of something.

n. a highly condensed or brief summary of a larger work or idea; often used as an adjective.

“The magazine provided a capsule review of the new movie.”

“The historian provided a capsule history of the revolution, managing to condense decades of conflict into a single, insightful paragraph.”

06capsule hotel room

B2 · Upper Intermediate Countable noun

n. a very small, tube-shaped room for one person in a special type of hotel.

n. a modular, fiberglass or plastic unit used as a guest room in a capsule hotel.

“I stayed in a capsule for one night because it was cheaper than a regular hotel.”

“While efficient for solo travelers, the capsule offers little more than a bed and a small television within its confined walls.”

Synonyms

07to summarize

C1 · Advanced Formal

v. to give a short, clear summary of a lot of information.

v. to summarize or condense information into a brief, manageable form.

“It is difficult to capsule such a long story into just two minutes.”

“The executive asked the consultant to capsule the findings of the three-hundred-page report for the board of directors.”

Antonyms

Real-World Examples

“Image taken from a Nasa video shows the SpaceX capsule carrying four astronauts docking at the International Space Station.”
The Guardian 2 Oct 2026
“The collected samples are expected to return to Earth by mid 2031 inside a capsule designed to survive re-entry through Earth's atmosphere.”
ScienceDaily 19 Sept 2026
“A return capsule is meant to head back to Earth and land in Australia in 2031.”
Phys.org 20 Aug 2026
“With the crew getting used to microgravity, live video was streamed back to Earth from inside their capsule.”
BBC News 11 Apr 2026

Etymology

Borrowed from French capsule, from Latin capsula, diminutive of capsa (“box”).

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

Domains

AnatomyBotanyChemistry

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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference