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Vacuole

/ˈvakyo͞oˌōl/ Noun, pl. vacuoles 1. A vacuole is a membrane-bound organelle which is present in all plant and fungal cells and some protist, animal and bacterial cells. Vacuoles are essentially enclosed compartments which are filled with water containing inorganic and organic molecules including enzymes in solution, though in certain cases they may contain solids which have been engulfed. Vacuoles are formed by the fusion of multiple membrane vesicles and are effectively just larger forms of these. The organelle has no basic shape or size; its structure varies according to the needs of the cell. (wikipedia.org) 2. (Cytology) A large membrane-bound vesicle in a cell’s cytoplasm. (wiktionary.com) 3. A membrane-bound vesicle found in the cytoplasm of a cell whose function includes intracellular secretion, excretion, storage, and digestion. (biology-online.org) 4. A space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid. (Google dictionary) 5. A small cavity or space in tissue, esp. in nervous tissue as the result of disease. (Google dictionary) Word origin: Latin vacuolum, diminutive form of...

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Vascular

/ˈvaskyələr/ Adjective 1. (Zoology) Vascular in zoology and medicine means “related to blood vessels”, which are part of the circulatory system. Its origin is in the Latin word vasculum, meaning little vessel. (wikipedia.org) 2. (Anatomy) Of, pertaining to, or containing vessels that conduct or circulate fluids, such as blood, lymph, or sap, through the body of an animal or plant. (wiktionary.org) 3. Of, relating to, affecting, or consisting of a vessel or vessels, esp. those that carry blood. (biology-online.org) 4. (Botany) Relating to or denoting the plant tissues (xylem and phloem) that conduct water, sap, and nutrients in flowering plants, ferns, and their relatives....

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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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