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Casque

/kask/ Noun, pl. casques 1. An enlargement on the upper mandible of the bill of some species of birds, including many hornbills. (wikipedia.org) 2. A large growth on the skulls of Cassowaries....

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Catabolism

/kəˈtabəˌlizəm/ Noun 1. The set of metabolic pathways that breaks down molecules into smaller units to release energy and is related to wakefulness. In catabolism, large molecules such as polysaccharides, lipids, nucleic acids and proteins are broken down into smaller units such as monosaccharides, fatty acids, nucleotides, and amino acids, respectively. As molecules such as polysaccharides, proteins, and nucleic acids are made from long chains of these small monomer units (mono = one + mer = part), the large molecules are called polymers (poly = many). (wikipedia.org) 2. Destructive metabolism, usually including the release of energy and breakdown of materials. (wiktionary.org) 3. The breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy; destructive metabolism. (Google Dictionary) 4. A metabolic process in which complex molecules are broken down into simple ones with the release of energy; destructive metabolism. Compare with anabolism. (Collins English Dictionary – Complete and Unabridged) 5. The destructive processes of chemical change in living organisms, characterized by the breaking down of complex substances into simpler ones, with a release of energy. (medical-dictionary.thefreedictionary.com) Word origin: From Greek katabole “a throwing down” (also “a foundation”), from kataballein “to throw down,” from kata- “down.” Greek cata-, “downward” + ballein “to...

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Catalyst

/ˈkatl-ist/ Noun, pl. catalysts 1. A substance capable of initiating or speeding up a chemical reaction. (biology-online.org) 2. A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. ( Google...

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Cavity

Noun, pl. cavities 1.(Science: anatomy) A hollow place or space or a potential space, within the body or in one of its organs, it may be normal or pathological. (biology-online.org) 2. A fluid filled space in many animals where organs typically develop, as in body cavity. (wikipedia.org) 3. (Dentistry) Damage to the structure of a tooth (wikipedia.org), or a soft area in a decayed tooth. (wiktionary.org) Syn: Dental caries   Word origin: From Late Latin cavitas, from Latin cavus (“hollow”), from Proto-Indo-European *ḱówHwos, from root Proto-Indo-European...

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Cecum

/ˈsēkəm/ Also caecum. Noun, pl. caeca or ceca 1. A pouch, usually peritoneal, that is considered to be the beginning of the large intestine. It receives fecal material from the ileum, and connects to the ascending colon of the large intestine. It is separated from the ileum by the ileocecal valve (ICV) or Bauhin’s valve. It is also separated from the colon by the cecocolic junction. The appendix is connected to the cecum. While the cecum is usually peritoneal, the ascending colon is retroperitoneal. (wikipedia.org) 2. A blind pouch connected to the large intestine between the ileum and the colon. (wiktionary.org) 3. The cavity in which the large intestine begins and into which the ileum opens. (wordnetweb.princeton.edu) 4. A blind pouch-like commencement of the colon in the right lower quadrant of the abdomen at the end of the small intestine. The appendix is a diverticulum that extends off the caecum. (biology-online.org) Word origin: From Latin intestinum caecum “blind gut,” from neuter of caecus “blind, hidden,” from Proto-Italic...

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