A small, irregularly rounded knot, mass, or lump of a mineral or mineral aggregate, normally having a warty or knobby surface and no internal structure, and usually exhibiting a contrasting composition from the enclosing sediment or rock matrix in which it is embedded (e.g. a chert nodule in limestone.) Most nodules appear to be secondary structures in sedimentary rocks they are primarily the result of post depositional replacement of the rock and are commonly elongated parallel to the bedding. Nodules can be separated as discrete masses from the host material [1].

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

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  • nodule — [ nɔdyl ] n. m. • 1498; lat. nodulus « petit nœud » 1 ♦ Pathol. Petite nodosité. Nodule cancéreux, tuberculeux. ⇒ tubercule. Anat. Petit renflement. Nodules des valvules aortiques du cœur. 2 ♦ (1795 ) Géol. Concrétion pierreuse qui se rencontre… …   Encyclopédie Universelle

  • Nodule — may refer to: Nodule (geology), a small knobbly rock or mineral cluster, such as a manganese nodule Nodule (medicine), a small aggregation of cells Nodule (dermatology), a lesion similar to a papule Root nodule, an outgrowth formed on the roots… …   Wikipedia

  • Nodule — Nod ule (n[o^]d [ u]l), n. [L. nodulus, dim. of nodus knot: cf. F. nodule.] A rounded mass or irregular shape; a little knot or lump. [1913 Webster] …   The Collaborative International Dictionary of English

  • nodule — (n.) early 15c., from L. nodulus small knot, dim. of nodus knot (see NET (Cf. net) (n.)). Related: Nodulated; nodulous; nodulation …   Etymology dictionary

  • nodule — nȍdule ž mn DEFINICIJA min. mineralna tijela izgrađena od submikroskopski sitnih zrna kvarca ili kalcedona i rožnjaka ETIMOLOGIJA lat. nodulus: čvorić …   Hrvatski jezični portal

  • nodule — ► NOUN 1) a small swelling or aggregation of cells in the body. 2) a swelling on a root of a leguminous plant, containing nitrogen fixing bacteria. 3) a small rounded lump of matter distinct from its surroundings. DERIVATIVES nodular adjective.… …   English terms dictionary

  • nodule — [näj′o͞ol] n. [L nodulus, dim. of nodus, a knot: see NET1] 1. a small knot or irregular, rounded lump 2. Anat. a small node 3. Bot. a small knot or joint on a stem or root, esp. one containing nitrogen fixing bacteria 4. Geol …   English World dictionary

  • Nodule — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Emprunté au latin nodulus signifiant « petit nœud », un nodule désigne à l origine un petit renflement ; ce mot a plusieurs… …   Wikipédia en Français

  • Nodule — A small solid collection of tissue, a nodule is palpable (can be felt). It may range in size from greater than 1.0 cm (3/8 inch) to somewhat less than 2 cm (13/16 inch) in diameter. A nodule may be present in the epidermis, dermis or subcutis (at …   Medical dictionary

  • nodule — [[t]nɒ̱djuːl, AM ʤuːl[/t]] nodules 1) N COUNT A nodule is a small round lump that can appear on your body and is a sign of an illness. [MEDICAL] In a typical case, there is a small inflamed nodule just under the skin. 2) N COUNT: oft n N A nodule …   English dictionary

  • nodule — UK [ˈnɒdjuːl] / US [ˈnɑˌdʒul] noun [countable] Word forms nodule : singular nodule plural nodules medical a small round lump in your body formed from cells or tissue …   English dictionary

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