English Reference

Word

aquatic

Phoneticsaquat·ic

US/əˈkwætɪk/

UK/əkwˈætɪk/

Definitions

01living or happening in water

B2 · Upper Intermediate Science

adj. living in, growing in, or happening in water.

adj. relating to water; specifically describing organisms that inhabit water or activities that occur within it.

“The park is home to many aquatic animals like frogs and turtles.”

“Biologists are concerned that the chemical runoff will permanently damage the delicate aquatic ecosystem of the local river.”

Usage

Often used to categorise plants, animals, or sports.

Synonyms

water-basedmarineoceanic

Antonyms

02a water plant

C2 · Proficiency Countable noun Science Technical

n. a plant that grows in water.

n. any plant that grows in or on water. Often used in the plural to refer to a collection of such plants.

“The pond was filled with lilies and other beautiful aquatics.”

“The botanical garden features a specialised greenhouse dedicated entirely to tropical aquatics and floating ferns.”

Usage

Usually appears in the plural form 'aquatics' when referring to plants.

Synonyms

hydrophytewater plant

Collocations

Common phrases and expressions where native English speakers use the word “aquatic” in context.

01. aquatic ecosystems 02. aquatic food

Real-World Examples

“The fossils also provide clues that Praearcturus may have spent part of its life in aquatic environments.”
ScienceDaily 2 Sept 2026
“This makes sense and has been shown before in different aquatic species.”
Phys.org 1 Sept 2026

Etymology

Borrowed from Middle French aquatique (“living in water”), from Latin aquaticus (“relating to water”), from aqua (“water”).

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

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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