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Vein

Noun, pl. veins (Anatomy) 1. Blood vessels that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. (wikipedia.org) 2. A blood vessel that transports blood from the capillaries back to the heart. (wiktionary.org) 3. (used in plural veins) The entrails of a shrimp. (wiktionary.org) (Botany) 1. In leaves, a thickened portion of the leaf containing the vascular bundle (wiktionary.org). One of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other expanded plant organ. Also called nervure (thefreedictionary.com). 2. A slender rib running through a leaf or bract, typically dividing or branching, and containing a vascular bundle. (Google Dictionary) (Zoology) 1. The nervure of an insect’s wing (wiktionary.org); One of the horny ribs that stiffen and support the wing of an insect. Also called nervure (thefreedictionary.com). 2. A hardened branching rib that forms part of the supporting framework of a wing, consisting of an extension of the tracheal system; a nervure. (Google Dictionary) (Geology) 1. A regularly shaped and lengthy occurrence of an ore; a lode (thefreedictionary.com). Other definitions 1. A fissure, crack, or cleft (thefreedictionary.com). 2. A fracture in rock containing a deposit of minerals or ore and typically having an extensive course underground....

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Ventral

/ˈventrəl/ Adjective 1. Related to the abdomen or stomach. (wiktionary.org) 2. (Anatomy) On the front side of the human body, or the corresponding surface of an animal, usually the lower surface. (wiktionary.org) 3. An anatomical term referring to the bottom portion of either foot and/or hand. (wiktionary.org) 4. (Anatomy) Relating to, situated on, or directed toward the belly surface. (biology-online.org) 5. (Anatomy) Denoting a position or region situated or close to the anterior. (biology-online.org) 6. (Botany) Adaxial; relating to the region facing the axis; pertaining to the lower or inner surface of a plant organ. (biology-online.org) Word origin: From Latin ventrālis, from venter (“belly,...

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Vertebrate

/ˈvɜrtɨbrət/ Noun, pl. vertebrates 1. Zoology One of the vertebrata; an animal with a backbone. (biology-online.org)   Adjective 1. Having vertebrae; having a backbone or spinal column. (dictionary.com) 2. Belonging or pertaining to the Vertebrata (or Craniata), a subphylum of chordate animals, comprising those having a brain enclosed in a skull or cranium and a segmented spinal column; a major taxonomic group that includes mammals, birds, reptiles, amphibians, and fishes....

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