English Reference

Word

axis

Phoneticsax·is, stress on the first syllable

US/ˈæksəs/

UK/ˈæksɪs/

Definitions

01line of rotation

B2 · Upper Intermediate Countable noun Science

n. an imaginary line that an object turns around.

n. an imaginary or real line about which a body rotates.

“The Earth spins on its axis once every twenty-four hours.”

“The planet's tilt on its axis is responsible for the seasonal variations in temperature and daylight observed across both hemispheres.”

Synonyms

pivotcenterline

02graph line

B2 · Upper Intermediate Countable noun Mathematics

n. one of the lines on a graph used to show the position of a point.

n. a fixed reference line for the measurement of coordinates on a graph or in a geometric space.

“The horizontal axis of the chart shows the months of the year.”

“The researcher plotted the independent variable along the horizontal axis while tracking the rate of change on the vertical axis.”

Synonyms

03central part of a plant

C2 · Proficiency Countable noun Botany Technical

n. the main stem of a plant that branches grow out of.

n. the central part or main stem of a plant around which other parts are arranged.

“The flowers are arranged symmetrically around the central axis of the plant.”

“In many species, the primary axis of the inflorescence determines the overall structural pattern of the flowering head.”

Synonyms

04political alliance

C1 · Advanced Countable noun Formal · Academic

n. a group of countries or people that work together for a common goal.

n. an alliance or coalition between different nations or political groups.

“The two nations formed a new economic axis to compete with larger neighbors.”

“The diplomatic axis between the two capitals shifted significantly following the signing of the mutual defense treaty.”

05the Axis powers

B2 · Upper Intermediate Plural noun

n. the group of countries led by Germany, Italy, and Japan during World War II.

n. the alliance of Germany, Italy, and Japan that opposed the Allies during the Second World War.

“The Axis powers were defeated at the end of the war in 1945.”

“Historians often analyze the strategic failures of the Axis command during the later stages of the European conflict.”

Antonyms

the Allies

06related to the Axis powers

B2 · Upper Intermediate

adj. describing things that belong to the German-led alliance in World War II.

adj. pertaining to the alliance of Germany, Italy, and Japan during the Second World War.

“The museum has a collection of Axis military equipment from the 1940s.”

“The intelligence report detailed the movement of Axis troops along the northern border during the winter offensive.”

Collocations

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

Adjective

01. central axis

“The design of the building is perfectly symmetrical around a central axis.”

adj + noun

02. horizontal axis

“The horizontal axis shows the time period in months from January to December.”

adj + noun

03. vertical axis

“In this bar chart, the vertical axis represents the total number of sales.”

adj + noun

Real-World Examples

“A second subtler form of competition runs within the Pakistan Taliban-AQIS-IMP axis itself.”
The Conversation 23 Sept 2026
“Scientists often refer to this two-way communication system as the gut-brain axis.”
ScienceDaily 4 Sept 2026

Word family

NOUN

axis(B2)

ADJECTIVE

Related words

Domains

AnatomyBotanyMathematicsMilitary

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
Common
Level
B2 · Upper Intermediate
Updated

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English Reference