niche

niche
1. In contrast radiography, an eroded or ulcerated area, especially gastrointestinal or vascular, which can be detected when it fills with contrast medium. 2. An ecologic term for the position occupied by a species in a biotic community, particularly its relationships to various other competitor, predator, prey, and parasite species. [Fr.]
- enamel n. SYN: enamel crypt.
- Haudek n. an archaic term for the radiographic appearance in profile of contrast material filling a gastric ulcer in the wall of the stomach.

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niche 'nichsometimes 'nishor 'nēsh n CRATER <typical \niche formation resulting from an ulcer>

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n.
(in anatomy) a recess or depression in a smooth surface.

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(nich) [Fr. “recess”] a defect in an otherwise even surface, especially a depression or recess in the wall of an organ as seen on a radiograph or by the unaided eye.

Medical dictionary. 2011.

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  • niche — 1. (ni ch ) s. f. 1°   Enfoncement pratiqué dans l épaisseur de quelque corps solide, pour y placer quelque chose, une statue, un vase, etc. Mettre une statue dans une niche. Le choeur de cette église est orné de saints placés dans des niches.… …   Dictionnaire de la Langue Française d'Émile Littré

  • Niche — (UK /ˈniːʃ/ or US …   Wikipedia

  • Niche — Gewässerkennzahl FR: A4400300 Lage Lothringen, Frankreich Flusssystem …   Deutsch Wikipedia

  • niche — The usual pronunciation is neesh, in the French manner, although the anglicized form nich is also heard. In business jargon, niche (always pronounced neesh, of course) means ‘a special section of the market’ to which the marketing effort for… …   Modern English usage

  • Niche — • A recess for the reception of a statue, so designed as to give it emphasis, frame it effectively, and afford some measure of protection. Catholic Encyclopedia. Kevin Knight. 2006. Niche     Niche …   Catholic encyclopedia

  • niché — niché, ée (ni ché, chée) part. passé de nicher. Logé dans un nid. Un faucon niché au haut d un arbre.    Par extension. •   Lors je lui dis : te voilà mal niché, Petit larron ; cherche une autre retraite : Celle du coeur sera bien plus secrète, J …   Dictionnaire de la Langue Française d'Émile Littré

  • niche — [ nıtʃ ] noun count 1. ) a job or activity that you are good at and that is very suitable for you: She s never really found her niche in life. 2. ) BUSINESS an opportunity to sell a particular product or service that no one else is selling: The… …   Usage of the words and phrases in modern English

  • niche — (n.) 1610s, shallow recess in a wall, from Fr. niche recess (for a dog), kennel (14c.), perhaps from It. nicchia niche, nook, from nicchio seashell, said by Klein and Barnhart to be probably from L. mitulus mussel, but the change of m to n is not …   Etymology dictionary

  • Niche — (n[i^]ch), n. [F., fr. It. nicchia, prop., a shell like recess in a wall, fr. nicchio a shellfish, mussel, fr. L. mytilus.] A cavity, hollow, or recess, generally within the thickness of a wall, for a statue, bust, or other erect ornament. Hence …   The Collaborative International Dictionary of English

  • niche — ► NOUN 1) a shallow recess, especially one in a wall to display an ornament. 2) (one s niche) a comfortable or suitable position in life. 3) a specialized but profitable corner of the market. 4) Ecology a role taken by a type of organism within… …   English terms dictionary

  • niche — [nich; ] Brit also [ nēsh] n. [Fr < OFr nichier, to nest < VL * nidicare < L nidus, NEST] 1. a recess or hollow in a wall, as for a statue, bust, or vase 2. a place or position particularly suitable to the person or thing in it 3. any… …   English World dictionary

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