hilum
Americannoun
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Botany.
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the mark or scar on a seed produced by separation from its funicle or placenta.
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the nucleus of a granule of starch.
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Mycology. a mark or scar on a spore at the point of attachment to the spore-bearing structure.
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Anatomy. the region at which the vessels, nerves, etc., enter or emerge from a part.
noun
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botany
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a scar on the surface of a seed marking its point of attachment to the seed stalk (funicle)
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the nucleus of a starch grain
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a deep fissure or depression on the surface of a bodily organ around the point of entrance or exit of vessels, nerves, or ducts
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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.
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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 .
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of hilum
1650–60; < New Latin; Latin: little thing, trifle; see nil
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Internally, the kidney has three layers: an outer cortex, the middle hilum, and the inner renal pelvis.
From Textbooks ● Jun. 9, 2022
Internally, the kidney has three regions—an outer cortex, a medulla in the middle, and the renal pelvis in the region called the hilum of the kidney.
From Textbooks ● Jun. 9, 2022
The medial surface of each lung contains an area known as the hilum where vessels enter and exit.
From Textbooks ● Jan. 1, 2015
Ureters, blood vessels, lymph vessels, and nerves enter and leave at the renal hilum.
From Textbooks ● Jun. 19, 2013
The part by which the ovule is attached to the placenta or cord is its base or hilum, the opposite extremity being its apex.
From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" by Various
The medial-facing hila are tucked into the sweeping convex outline of the cortex.
From Textbooks ● Jun. 19, 2013
Another Spanish adage is, "El que trabaja y madra, hila oro": "He who labours and strives spins gold," reaps the reward of his industry.
From Proverb Lore Many sayings, wise or otherwise, on many subjects, gleaned from many sources by Hulme, F. Edward (Frederick Edward)
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
