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Osmosis

/äzˈmōsis/  /äs-/ Noun 1. The spontaneous net movement of solvent molecules through a partially permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides. (wikipedia.org) 2. A physical process in which any solvent moves, without input of energy, across a semipermeable membrane (permeable to the solvent, but not the solute) separating two solutions of different concentrations. Although osmosis does not require input of energy, it does use kinetic energy and can be made to do work. (wikipedia.org) 3. The net movement of solvent molecules from a region of high solvent potential to a region of lower solvent potential through a partially permeable membrane. (wiktionary.org) 4. Tendency of water to flow from a hypotonic solution (low concentration of dissolved substances) to hypertonic solution (higher concentration of dissolved substances) across a semipermeable membrane. (biology-online.org) Word origin: Latinized from osmose (1854), shortened from endosmosis (1830s), from endosmose “inward passage of a fluid through a porous septum” (1829), from French endo– “inward” + Greek osmos “a thrusting, a pushing,” from stem of othein “to push, to...

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Ossicle

/ˈäsikəl/ Noun, pl. ossicles (Anatomy) 1. The three smallest bones in the human body, the malleus, the incus, and the stapes. They are contained within the middle ear space and serve to transmit sounds from the air to the fluid-filled labyrinth (cochlea). The absence of the auditory ossicles would constitute a moderate-to-severe hearing loss. (wikipedia.org) 2. A small bone (or bony structure), especially one of the three of the middle ear. (wiktionary.org) (Zoology) 1. Bone-like joint or plate, especially: a. one of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes; b. one of the hard articuli or joints of the stem or branches of a crinoid or encrinite; c. one of the several small hard chitinous parts or processes of the gastric skeleton of crustaceans, as in the stomach of a lobster or crawfish. d. The skeleton of echinoderms is made of ossicles, linked to each other via muscles and connective tissue. Syn: auditory ossicles Word origin: From Latin ossiculum, diminutive of os ,...

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Ossification

ˌä-sə-fə-ˈkā-shən Noun 1. The process of laying down new bone material by cells called osteoblasts. It is synonymous with bone tissue formation. There are two processes resulting in the formation of normal, healthy bone tissue:[1] Intramembranous ossification is the direct laying down of bone into the primitive connective tissue (mesenchyme), while endochondral ossification involves cartilage as a precursor. (wikipedia.org) 2. The normal process by which bone is formed. (wiktionary.org) 3. The calcification of tissue into a bonelike mass; the mass so formed. (wiktionary.org) 4. The process of becoming set in one’s ways or beliefs; rigid conventionality. (wiktionary.org) 5. Hardened conventionality. (wordnetweb.princeton.edu) Syn: Osteogenesis Word origin: From Medieval Latin ossous, from Latin osseus “bony, of bone,” from os (genitive ossis)...

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Ossification

Noun, pl. ossifications 1. The process of laying down new bone material by cells called osteoblasts. It is synonymous with bone tissue formation. There are two processes resulting in the formation of normal, healthy bone tissue:[1] Intramembranous ossification is the direct laying down of bone into the primitive connective tissue (mesenchyme), while endochondral ossification involves cartilage as a precursor. (wikipedia.org) 2. The normal process by which bone is formed. (wiktionary.org) 3. The calcification of tissue into a bonelike mass; the mass so formed. (wiktionary.org) 4. a. The process of becoming set in one’s ways or beliefs; rigid conventionality. (wiktionary.org) b. The process of becoming rigidly fixed in a conventional pattern of thought or behavior. (biology-online.org) Syn: osteogenesis Word origin: From Latin ossis “of bones,” genitive of os...

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Ossify

/ˈäsəˌfī/ Verb 1. To transform (or cause to transform) from a softer animal substance into bone; particularly the processes of growth in humans and animals. (wiktionary.org) 2. To change (as cartilage) into bone. (merriam-webster.com) 3. To become (or cause to become) inflexible and rigid in habits or opinions. (wiktionary.org) 4. To grow (or cause to grow) formulaic and permanent. (wiktionary.org) Word origin” Formed from Latin os (genitive ossis)...

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