| chaos | 1. State of such total disorganization that it has no constructive predicates. 2. A state in which no causal relationships are operating. Origin: G., primeval formless void (05 Mar 2000) |
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| chaos theory | A branch of mathematics dealing with events and processes that cannot be predicted precisely on the basis of conventional mathematical theories or laws; some biological processes, e.g., spread of malignant disease, appear to conform to chaos theory, at least sometimes. (05 Mar 2000) |
| chaotic heart | Apparently totally uncoordinated cardiac action or rhythm. (05 Mar 2000) |
| chaotropic | Pertaining to chaotropism. (05 Mar 2000) |
| chaotropism | The property of certain substances, usually ions (e.g., SCN-, ClO4-, guanidinium), to disrupt the structure of water and thereby promote the solubility of nonpolar substances in polar solvents (e.g., water), the unfolding of proteins, the elution from or movement through a chromatographic medium of an otherwise tightly bound substance, etc. Origin: G. Chaos, disorder, confusion, + trope, a turning (05 Mar 2000) |
| CHAP | Acronym for cyclophosphamide, hexamethylmelamine, doxorubicin (Adriamycin), and cisplatin, a chemotherapy regimen used in the treatment of ovarian cancer. (05 Mar 2000) |
| chaparral | A plant community of drought-adapted shrubs, usually found in rocky and rapidly drained shallow soils. (09 Oct 1997) |
| chaperone | <cell biology> Cytoplasmic proteins of both prokaryotes and eukaryotes that bind to nascent or unfolded polypeptides and ensure correct folding or transport. Chaperone proteins do not covalently bind to their targets and do not form part of the finished product. Heat-shock proteins are an important sub set of chaperones. Three major families are recognised, the chaperonins (groEL and hsp60), the hsp70 family and the hsp90 family. Outside these major families are other proteins with similar functions including nucleoplasmin, secB and T-cell receptor associated protein. (18 Nov 1997) |
| chaperonin | <cell biology> Subset of chaperone proteins found in prokaryotes, mitochondria and plastids major example is prokaryotic GroEL (the eukaryotic equivalent of which is hsp60). (18 Nov 1997) |
| chaperonin 10 | Members of the chaperonin heat-shock protein family. Chaperonin 10 purified from bacteria, plastids, or mitochondria occurs as an oligomer of seven identical subunits arranged in a single ring. (12 Dec 1998) |
| chaperonin 60 | Members of the chaperonin heat-shock protein family. Chaperonin 60 purified from bacteria, plastids, or mitochondria is an oligomeric protein with a distinctive structure of fourteen subunits, arranged in two rings of seven subunits each. (12 Dec 1998) |
| chaperonins | A class of sequence-related molecular chaperones found in bacteria, mitochondria, and plastids. Chaperonins are abundant constitutive proteins that increase in amount after stresses such as heat shock, bacterial infection of macrophages, and an increase in the cellular content of unfolded proteins. Bacterial chaperonins are major immunogens in human bacterial infections because of their accumulation during the stress of infection. Two members of this class of chaperones are chaperonin 10 and chaperonin 60. (12 Dec 1998) |
| chaplaincy service, hospital | Hospital department which administers religious activities within the hospital, e.g., pastoral care, religious services. (12 Dec 1998) |
| chappa | A disease marked by subcutaneous nodules, the size of a pigeon's egg, which break down, release a fatty looking material, and form ulcers; the eruption is preceded by severe muscular and articular pains. Origin: W. Af. (05 Mar 2000) |
| chapped | Having or pertaining to skin, especially of the hands, that is dry, scaly, and fissured, owing to the action of cold or to the excess rate of evaporation of moisture from the skin surface. Origin: M.E. Chap, to chop, split (05 Mar 2000) |
| chamfer |
bevel: cut a bevel on; shape to a bevel; "bevel the surface" bevel: two surfaces meeting at an angle different from 90 degrees furrow: cut a furrow into a columns
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| change |
undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night" an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago" a relational difference between states; especially between states before and after some event; "he attributed the change to their marriage" cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue" make or become different in some particular way, without permanently losing one's or its former characteristics or essence; "her mood changes in accordance with the weather"; "The supermarket's selection of vegetables varies according to the season" the action of changing something; "the change of government had no impact on the economy"; "his change on abortion cost him the election" switch: lay aside, abandon, or leave for another; "switch to a different brand of beer"; "She switched psychiatrists"; "The car changed lanes" the result of alteration or modification; "there were marked changes in the lining of the lungs"; "there had been no change in the mountains" change clothes; put on different clothes; "Change before you go to the opera" the balance of money received when the amount you tender is greater than the amount due; "I paid with a twenty and pocketed the change" a thing that is different; "he inspected several changes before selecting one" exchange or replace with another, usually of the same kind or category; "Could you convert my dollars into pounds?"; "He changed his name"; "convert centimeters into inches"; "convert holdings into shares" a different or fresh set of clothes; "she brought a change in her overnight bag" exchange: give to, and receive from, one another; "Would you change places with me?"; "We have been exchanging letters for a year" coins of small denomination regarded collectively; "he had a pocketful of change" transfer: change from one vehicle or transportation line to another; "She changed in Chicago on her way to the East coast" money received in return for its equivalent in a larger denomination or a different currency; "he got change for a twenty and used it to pay the taxi driver" deepen: become deeper in tone; "His voice began to change when he was 12 years old"; "Her voice deepened when she whispered the password" remove or replace the coverings of; "Father had to learn how to change the baby"; "After each guest we changed the bed linens" variety: a difference that is usually pleasant; "he goes to France for variety"; "it is a refreshing change to meet a woman mechanic"
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| charlatan |
mountebank: a flamboyant deceiver; one who attracts customers with tricks or jokes
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| chart |
make a chart of; "chart the territory" a visual display of information plan in detail; "Bush is charting a course to destroy Saddam Hussein" graph: represent by means of a graph; "chart the data" a map designed to assist navigation by air or sea
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| chalazion |
a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked
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| CHA | Israeli statesman who persuaded the United States to recognize the new state of Israel and became its first president (1874-1952) |
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| CHA | French expressionist painter (born in Lithuania) (1893-1943) |
| CHA | Israeli statesman who persuaded the United States to recognize the new state of Israel and became its first president (1874-1952) |
| CHA | a series of (usually metal) rings or links fitted into one another to make a flexible ligament |
| CHA | a necklace made by a stringing objects together |
| CHA | anything that acts as a restraint |
| CHA | metal shackles |
| CHA | a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership |
| CHA | a series of things depending on each other as if linked together |
| CHA | a series of linked atoms (generally in an organic molecule) |
| CHA | a series of hills or mountains |
| CHA | a unit of length |