axis
noun
Simple meaning
An imaginary line around which an object spins or is symmetrically arranged.
Pronunciation
Say it like this:
aksuhsSay the bold part a little louder.
IPA pronunciation (US)
ˈæksəs
This word is pronounced essentially the same in American and British English, so one transcription covers both.
IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.
Definition
Everyday modern meanings first, grouped by part of speech.
noun
geometry
An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry).
mathematics
A fixed one-dimensional figure, such as a line or arc, with an origin and orientation and such that its points are in one-to-one correspondence with a set of numbers; an axis forms part of the basis of a space or is used to position and locate data in a graph (a coordinate axis)
geometry
The center around which something rotates
anatomy
The 2nd cervical vertebra; serves as a pivot for turning the head
anatomy
The second cervical vertebra of the spine
The alliance (in effect before and during World War II) of Germany, Italy, Japan, and several minor allied countries, which opposed the Allies.
Word at a Glance
- Difficulty
- A2 · Elementary (estimated)
- Frequency
- Common
- Typical Use
- General English
Word Aura™
How this word commonly comes across.
Aura for this meaning
This meaning: An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry).
Used this way, axis is a specialist word that usually carries little praise or criticism of its own. This is a mathematical use: it is defined precisely and belongs to working with figures and calculations rather than to ordinary conversation.
- Emotional tone
- Neutral
- Formality
- Specialist/technical
- Intensity
- Not strongly marked
- How common
- Specialized
- Connotation
- Clinical and technical
- Usage feel
- Technical and specialized
Where it naturally appears
- Mathematics
- Geometry
- Academic writing
- Education/classroom
Usage note
In general conversation this sense usually needs explaining — outside its field, people reach for a plainer word.
Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.
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Common Patterns and Combinations
How this word naturally appears with others.
Word Family
Related forms, grouped by how they connect.
Compound terms
Established multiword terms.
The center around which something rotates.
The 2nd cervical vertebra.
The longest axis of an ellipse or ellipsoid.
The shorter or shortest axis of an ellipse or ellipsoid.
A reflecting telescope with the mirror slightly tilted to throw the image to the side where it can be viewed.
In a doubly refracting crystal, the line in the direction of which no double refraction occurs.
Related Words
Connected to the same idea, not synonyms.
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Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.