1. The part of an organ where the nerves and vessels enter and leave. SYN: porta (1). 2. A depression or slit resembling the h. in the olivary nucleus of the brain. [L. a small bit or trifle]
- h. of dentate nucleus [TA] the mouth of the flasklike dentate nucleus of the cerebellum, directed inward, and giving exit to many of the fibers which compose the superior cerebellar peduncle or brachium conjunctivum. SYN: h. nuclei dentati [TA].
- h. of inferior olivary nucleus [TA] the medially oriented opening in the folded cell layer composing the inferior olivary nucleus through which the efferent fibers of the nucleus make their exit. SYN: h. nuclei olivaris inferioris [TA].
- h. of kidney [TA] the depression on the medial border of the kidney through which pass the segmental renal vessels and renal nerves and where the apex of the renal pelvis occurs. SYN: h. renalis [TA], porta renis.
- h. lienis splenic h..
- h. of lung [TA] a wedge-shaped depression on the mediastinal surface of each lung, where the bronchus, blood vessel s, nerves, and lymphatics enter or leave the viscus. SYN: h. pulmonis [TA], porta pulmonis.
- h. of lymph node [TA] the depressed area of the surface of a lymph node through which the efferent lymphatics emerge from the medulla and through which blood vessel s enter and leave the node. SYN: h. nodi lymphatici [TA].
- h. nodi lymphatici [TA] SYN: h. of lymph node.
- h. nuclei dentati [TA] SYN: h. of dentate nucleus.
- h. nuclei olivaris inferioris [TA] SYN: h. of inferior olivary nucleus.
- h. ovarii SYN: h. of ovary.
- h. of ovary the depression along the mesovarian margin, at the insertion of the mesovarium, where vessels and nerves enter or leave the ovary. SYN: h. ovarii.
- h. pulmonis [TA] SYN: h. of lung.
- h. renalis [TA] SYN: h. of kidney.
- h. of spleen SYN: splenic h..
- splenic h. [TA] a fissure on the gastric surface of the spleen, giving passage to the splenic vessels and nerves. SYN: h. splenicum [TA], h. lienis, h. of spleen, porta lienis.
- h. splenicum [TA] SYN: splenic h..

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hi·lum 'hī-ləm n, pl hi·la -lə
1) a scar on a seed (as a bean) marking the point of attachment of the ovule
2) a notch in or opening from a bodily part suggesting the hilum of a bean esp. when it is where the blood vessels, nerves, or ducts leave and enter: as
a) the indented part of a kidney
b) the depression in the medial surface of a lung that forms the opening through which the bronchus, blood vessels, and nerves pass
c) a shallow depression in one side of a lymph node through which blood vessels pass and efferent lymphatic vessels emerge

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n. (pl. hila)
a hollow situated on the surface of an organ, such as the ovary, kidney, or spleen, at which structures such as blood vessels, nerve fibres, and ducts enter or leave it.

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hi·lum (hiґləm) pl. hiґla [L. “a small thing, a trifle”] a depression or pit at the part of an organ where vessels and nerves enter. Formerly called hilus. hilar adj

Medical dictionary. 2011.

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Look at other dictionaries:

  • Hilum — Hi lum, n. [L., a little thing, trifle.] 1. (Bot.) The eye of a bean or other seed; the mark or scar at the point of attachment of an ovule or seed to its base or support; called also {hile}. [1913 Webster] 2. (Anat.) The part of a gland, or… …   The Collaborative International Dictionary of English

  • hilum — L. hilum “little thing, shred, trifle.” Related: Hilar …   Etymology dictionary

  • Hilum — (Bot., Nabel, Fensterchen), 1) eine deutlich abgegrenzte, oft vertiefte od. erhabene Stelle an den Samen, wo dieselben am Samenträger od. Nabelstrange angeheftet waren, od. an einsamigen nackten Früchten, wo diese dem Fruchtboden anfaßen; 2) die… …   Pierer's Universal-Lexikon

  • Hilum — (lat.), in der Botanik Nabel, die Stelle des Samens, wo derselbe am Samenträger befestigt ist …   Meyers Großes Konversations-Lexikon

  • hilum — [hī′ləm] n. pl. hila [hī′lə] [ModL < L, little thing] 1. HILUS 2. Bot. a) a scar on a seed, marking the place where it was attached to the seed stalk b) the nucleus in a starch grain …   English World dictionary

  • Hilum — A hilum (formerly called a hilus) is a depression or pit where structures are attached.* In human anatomy, the hilum is part of an organ where structures such as blood vessels and nerves enter. ** The hilum of kidney (admits the renal artery,… …   Wikipedia

  • Hilum — Hi|lum 〈n.; s, Hi|la; Bot.〉 Stelle, an der der Samen einer Pflanze am Samenträger befestigt ist; Sy Pflanzennabel [lat., „kleine Faser“] * * * Hi|lum, das; s, …la [lat. hilum = kleines Ding] (Bot.): Stelle, an der der Same am Fruchtknoten… …   Universal-Lexikon

  • Hilum — Das Hilum oder der Hilus ist ein Wort aus dem Lateinischen und heißt wörtlich übersetzt „Stiel“. In der Anatomie ist ein Hilus der Ansatzpunkt, an dem Blutgefäße und Nerven in ein Organ eintreten. Man spricht beispielsweise vom Leber , Lungen ,… …   Deutsch Wikipedia

  • Hilum — Hi̱lum [lat. hilum = kleines Ding] s; [s], Hi̱la: kleine Einbuchtung oder Vertiefung an einem Organ als Austrittsstelle für Gefäße, Nerven und Röhrensysteme (Anat.). Hi̱lum lie̱|nis [↑Lien]: Einbuchtung an der dem Magen zugewandten Milzoberfläche …   Das Wörterbuch medizinischer Fachausdrücke

  • hilum — noun (plural hila) Etymology: New Latin, from Latin, trifle Date: circa 1753 1. a scar on a seed (as a bean) marking the point of attachment of the ovule 2. a notch in or opening from a bodily part suggesting the hilum of a bean …   New Collegiate Dictionary

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