axis

Pronunciation

• IPA ^(key): /æxɪs/

• Audio (US)

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Noun

Singular axis

Plural axes

1. (mathematics) An axis is the imaginary line that an object spins around. This is the middle of the circle of the turn, and at a right angle to it.

   The Earth rotates once a day on its axis.

2. (anatomy) The second cervical vertebra of the spine.

Noun 2

Singular axis

Plural axises

1. A type of deer that lives in Asia.