- the mark or scar on a seed produced by separation from its funicle or placenta.
- the nucleus of a granule of starch.
- Mycology. a mark or scar on a spore at the point of attachment to the spore-bearing structure.
- Anatomy. the region at which the vessels, nerves, etc., enter or emerge from a part.
Origin of hilum
Examples from the Web for hilum
Historical Examples of hilum
An excrescence or appendage at or about the hilum of a seed.
Orthotropous ovule of Buckwheat: c, hilum and chalaza; f, orifice.
Campylotropous ovule of a Chickweed: c, hilum and chalaza; f, orifice.
Hilum, the place of junction of the funiculus with the body of the ovule.
Seed of a Violet (anatropous): a, hilum; b, rhaphe; c, chalaza.
- a scar on the surface of a seed marking its point of attachment to the seed stalk (funicle)
- the nucleus of a starch grain
- a deep fissure or depression on the surface of a bodily organ around the point of entrance or exit of vessels, nerves, or ducts
Word Origin for hilum
Word Origin and History for hilum
Latin, literally "little thing, shred, trifle." Related: Hilar.
- A depression or slit-like opening through which nerves, ducts, or blood vessels enter and leave in an organ or a gland.porta
- A mark or scar on a seed, such as a bean, showing where it was formerly attached to the plant. The hilum indicates the point of attachment of the funiculus.
- A depression or opening through which nerves, ducts, or blood vessels pass in an organ or a gland, as in the medial aspect of the lungs or the kidneys .