noun, plural hi·la [hahy-luh] /ˈhaɪ lə/.
- the mark or scar on a seed produced by separation from its funicle or placenta.
- the nucleus of a granule of starch.
Origin of hilum
Related formshi·lar, adjective
Examples from the Web for hilum
The part by which the ovule is attached to the placenta or cord is its base or hilum, the opposite extremity being its apex.
On the other face of the grain which is towards the palea, the hilum is seen at the base.A Handbook of Some South Indian Grasses|Rai Bahadur K. Ranga Achariyar
This bean bears on one of its edges an oval scar, very distinctly marked, called the hilum.Omphalos|Philip Henry Gosse
Rhaphe, the line or ridge which runs from the hilum to the chalaza in anatropous and amphitropous seeds.The Elements of Botany|Asa Gray
The hilum or base of the seed, and the chalaza or base of the nucellus are united by means of the raphe r.
British Dictionary definitions for hilum
noun plural -la (-lə)
- a scar on the surface of a seed marking its point of attachment to the seed stalk (funicle)
- the nucleus of a starch grain