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hilum Line breaks: hilum
Pronunciation: /ˈhʌɪləm/

Definition of hilum in English:

noun (plural hila ˈhʌɪlə)

1The scar on a seed marking the point of attachment to its seed vessel.
Example sentences
  • A hilar groove is located at the centre of the seed hilum area, and consists of more elongated macrosclereids.
  • Additional indicators are harvesting seed with bleeding hila and having green stem at harvest.
  • The ‘black eye’ of the common variety is the hilum, or attachment point of the pea to the pod.
1.1A point in a starch granule around which the layers of starch are deposited.
1.2 Anatomy another term for hilus.
Example sentences
  • The anterior apical and tumor was palpable within the hilum and appeared to be centered in the hilum of the left lung.
  • The median sternotomy is used to gain access to the anterior mediastinum, heart, great vessels, hila and pleural spaces.
  • These arterioles frequently showed continuity at the glomerular hilum with segmental necrotizing glomerular lesions.


Mid 17th century (in the Latin sense): from Latin, literally 'little thing, trifle', once thought to mean 'that which sticks to a bean', hence the current sense (mid 18th century).

Words that rhyme with hilum

asylum, phylum, whilom
Definition of hilum in:
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