Definition of axilla in English:

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Pronunciation: /akˈsɪlə/

noun (plural axillae /akˈsɪliː/)

1 Anatomy An armpit, or the corresponding part in a bird or other animal.
Example sentences
  • The T2 nerve root controls the palms on either side and the T4 nerve root controls the axilla and armpit.
  • A holosystolic murmur that may radiate to the axilla, the upper sternal borders or the subscapular region is apparent on physical examination.
  • Extremities showed tenderness over the right shoulder and axilla.
2 Botany An axil.
Example sentences
  • Basal branches emerged from lower axillas and developed earlier.
  • In coconut palms, egg-laying occurs at the axillas of the leaves.


Early 17th century: from Latin, diminutive of ala 'wing'.

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