CD meaning in Electronics ?

Answer:

What is Critical Dimension mean?

In the renormalization group analysis of phase transitions in physics, a critical dimension is the dimensionality of space at which the character of the phase transition changes. Below the lower critical dimension there is no phase transition. Above the upper critical dimension the critical exponents of the theory become the same as that in mean field theory. An elegant criterion to obtain the critical dimension within mean field theory is due to V. Ginzburg.

Since the renormalization group sets up a relation between a phase transition and a quantum field theory, this has implications for the latter and for our larger understanding of renormalization in general. Above the upper critical dimension, the quantum field theory which belongs to the model of the phase transition is a free field theory. Below the lower critical dimension, there is no field theory corresponding to the model.

In the context of string theory the meaning is more restricted: the critical dimension is the dimension at which string theory is consistent assuming a constant dilaton background without additional confounding permutations from background radiation effects. The precise number may be determined by the required cancellation of conformal anomaly on the worldsheet; it is 26 for the bosonic string theory and 10 for superstring theory.

reference

Full Form	Category
Customer Drawing	Academic & Science
Construction Document	Academic & Science
Circular Dichroism	Academic & Science
400 (Roman numeral)	Academic & Science
205	Academic & Science
Common Denominator	Academic & Science
Class Demo	Academic & Science
Cordoba Durchmusterung	Academic & Science
Cosmological Decade	Academic & Science
Control Desk	Academic & Science
Coffer Dam	Academic & Science
Component Drawings	Academic & Science
Caison Disease	Academic & Science
Carbon Dioxin	Academic & Science
Cardinal Direction	Academic & Science
Chest of Drawers	Academic & Science
Cable Disposition	Academic & Science
Cash Disbursement	Accounts and Finance
Cash Discount	Accounts and Finance
Conservation Dependent	Animal Kingdom
Certificate of Deposit	Banking
Currency Deposit	Banking
Charter of Demands	Banking
Caution Deposit	Banking
Cash Deposit	Banking
Convertible Debentures	Banking
Communications Department	Business
Can't Deliver	Business
Custom Duty	Business
Center Discharge	Business
Closing Disclosure	Business
Clothes Dryer	Business
Career Development	Business
Certified Dietitian	Business
Cendant Corporation	Business
Cadmium	Chemistry
Celebrity Disguise	Community
Christian Dior	Community
Child Development	Community
Celine Dion	Community
Country Disco	Community
Central District	Community
Community Development	Community
Casting Director	Community
Continuing Development	Community
Coordinate Description	Community
Condom	Community
Communication Device	Computer and Networking
Committee Draft	Computer and Networking
Cursor Down	Computer Assembly Language
Compact Disk	Computer Hardware
Change Directories	Computing
Continuous Delivery	Computing
Cached Data	Computing
Continuous Deployment	Computing
Congo (TLD)	Computing
Cell Designation	Computing
Computer Designed	Computing
Crippling Deppresion	Computing
Cloudy Data	Computing
Congo, Democratic Republic of the	Country Names
Cairo - Damascus	Country Specific
Current Disease	Disease
Contact Discontinuity	Electronics
Circuit Design	Electronics
Critical Dimension	Electronics
Capacitive Discharge	Electronics
Compact Disk Description	File Type
Couche Dur	General
Carl Dinkelacker	General
Civil Disobedience	General
Cookie Dough	General
Cuse Drummer	General
Cirrus Design	General
Changing Directory	General
Current Directory	General
Companion Dog	General
Canadian Forces Decoration	General
Character Death	General
Compact Dog	General
Coarse Decision	General
Curmudgeons Danny	General
Cyber Dad	General
Cluster Differentiation	General
Civil Defence	General
Collection Dinosaur	General
CD definition	General
Cd Diltiazem	General
Clearly Digital	General
Customer Definite	General
Certainty And Dependability	General
Conservancy District	General
Cannot Decide	General
Corn Dog	General
Cycle Day	General
Classy Dragapella	General
Class Document	General
Carnal Desire	General
Crouch Dash	General
Cortrel Dubousset	General
Certified Director	General
Cluster Of Differention	General
Cold Deadapril	General
Cold Dead	General
Collect Data	General
Cold Deadraising	General
Cow Dung	General
Complex Desires	General
Consolidated Design	General
Cash Disbursements	General
Creative Director	General
Contra Drive	General
Cardizem Diltiazem	General
Content Determination	General
Cat Dance	General
Crazy Daisy	General
Controversy Downplayed	General
Certain Doom	General
Cool Down	General
Canceled Deduction	General
Compression Dampening	Governmental
Compact Design	Governmental
Communications Division	Governmental
Corps Diplomatic	Governmental
Corps Diplomatique	Governmental
Chalmers Datenforung	Governmental
Cabinets on Dock	Governmental
Composite Document	Governmental
Congressional District	Governmental
Cornell Dubilier	Governmental
Census Division	Governmental
Convergencia Democrática	Governmental
Centro Democratico	Governmental
Centrum Democraten	Governmental
Civil Defence/Defense	Governmental
Centrum-Demokraterne	Governmental
Castle Douglas, Scotland	Governmental
Christian Democracy	Governmental
Constant Deflation	Governmental
Collector Distributor	Governmental
Common Digitizer	Governmental
CHANDRAPUR	Indian Railway Station
Compact Disc	Information Technology
Corriente Democrática	International
Cuerpo Diplomatico	International
Convergencia Democratica	International
Cambio Democrático	International
Corpo Diplomatico	International
Content Delivery	Internet
Cluster of Differentiation	Maths
Clusters of Differentiation	Maths
Candela (luminous Intensity)	Measurement Unit
Clinical Dietician	Medical
Clinical Director	Medical
Clinical Directorate	Medical
Cluster Designation	Medical
Coal Duct	Medical
Cocaine Dependent	Medical
Coeliac Disease	Medical
Cluster of Determination	Medical
Cognitive Deterioration	Medical
Collecting Duct	Medical
Colloidal Dispersion	Medical
Colonic Distension	Medical
Colour Discrimination	Medical
Commercial Diet	Medical
common bile duct	Medical
Complete Dentition	Medical
Complete Diet	Medical
Computer Design	Medical
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Conduction Defect	Medical
Conduction Disorder	Medical
Cone Degeneration	Medical
Cone Dystrophy	Medical
Conjugated Diene	Medical
Consanguineous Donor	Medical
Conserved Domain	Medical
Constitutional Delay	Medical
Contact Dermatitis	Medical
Controlled Delivery	Medical
Contagious Disease	Medical
Control Diet	Medical
Cadaveric Donor	Medical
Controlled Drug	Medical
Caesarean Delivery	Medical
Conventional Dialysis	Medical
Canavan disease	Medical
Conversion Disorder	Medical
Canine Distemper	Medical
Convulsive Disorder	Medical
Convulsive Dose	Medical
Corneal Dystrophy	Medical
Coronary Disease	Medical
Cortical Dysplasia	Medical
Counting Device	Medical
Courtship Display	Medical
Cowden’s disease	Medical
Crohn’s disease	Medical
Cultural Deprivation	Medical
Cultural Disadvantage	Medical
Cumulative Dose	Medical
Curative Dose	Medical
Cushing disease	Medical
cyclodextrin	Medical
Cystic Duct	Medical
Cytoplasmic Domain	Medical
Cytosine Deaminase	Medical
Cytosolic Domain	Medical
Cytotoxic Dose	Medical
Clinical Dietitian	Medical
Clinical Diagnosis	Medical
Capillary Diameter	Medical
Cardiac Denervation	Medical
Cardiac Disease	Medical
Cardiac Dysfunction	Medical
Castleman’s disease	Medical
Catalytic Domain	Medical
Condom Demonstartion	Medical
Constant Depression	Medical
cathepsin D	Medical
Cation Dependent	Medical
Celiac Disease	Medical
Communicable Disease	Medical
Cell Death	Medical
Cell Density	Medical
Cell Dissociation	Medical
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Cells of Differentiation	Medical
Chagas disease	Medical
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Chronic Dialysis	Medical
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Cigarettes/Day	Medical
Controled Drugs	Medical
Communicable Diseases	Medical
Cardiovascular Disease	Medical
Cause of Death	Medical
Cross Dresser	Messaging
Canadian Decoration	Military and Defence
Conference On Disarmament	Military and Defence
Combat Development	Military and Defence
Counter Drug	Military and Defence
Control Data	Military and Defence
Civil Defense	Military and Defence
Communications Deception	Military and Defence
Coordinating Draft	Military and Defence
Cavalry Division	Military and Defence
Cable Driver	Military and Defence
Channel Designator	Military and Defence
Customer Direct	Military and Defence
Collision Detection	Networking
Chinese Democracy	News & Entertainment
Computational Dynamics	Physics Related
České Dráhy (Czech Railways)	Regional
Democratic Republic of the Congo	Regional
Cross-Dressing	Society & Culture
Change Directory	Softwares
Content Distribution	Softwares
Candela	Space Science
Center Director	Space Science
Change Directive	Space Science
Coefficient of Drag	Space Science
Command Decoder	Space Science
Contractual Data	Space Science
Classical Dressage	Sports
Channel Delay	Telecommunication
Connect Direct	Telecommunication
Carrier Detect	Telecommunication
České Dráhy	Transport & Travel