Look up: opacity

1. Opacity
   The amount of show-through on a printed sheet. The more opacity or the thicker the paper the less show-through. (The thicker/heavier the paper the higher the cost.)
   Found on http://www.printusa.com/glos.htm
   
   
2. opacity
   A property of matter that prevents light from passing through it; non-transparent. The opacity or opaqueness of something depends on the frequency of the light. For instance, the atmosphere of Venus is transparent to ultra-violet light, but is opaque to visual light.
   Found on http://skyview.gsfc.nasa.gov/help/dictio
   
   
3. Opacity
   The amount of light obscured by particulate pollution in the air; clear window glass has zero opacity, a brick wall is 100 percent opaque. Opacity is an indicator of changes in performance of particulate control systems.
   Found on http://www.epa.gov/OCEPAterms/
   
   
4. opacity
   The degree of obscuration of light; for example, a glass window has almost 0% opacity, whereas a concrete wall has 100% opacity.
   Found on http://cdiac.ornl.gov/glossary.html
   
   
5. Opacity
   The optical property of a substrate material that minimises show-through from the background or the next sheet. The ratio of the reflectance with a black backing to the reflectance with a white backing. Ink opacity is the property of an ink that prevents the substrate from showing through.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
6. opacity
   [n] - the phenomenon of not permitting the passage of electromagnetic radiation 2. [n] - incomprehensibility resulting from obscurity of meaning 3. [n] - the quality of being opaque to a degree
   Found on http://www.webdictionary.co.uk/definitio
   
   
7. Opacity
   The hiding power of a paint or coating, commonly expressed as a percentage of the coverage over black substrate divided by the coverage over white substrate. The opacity of paint can be a good guide to how many coats it will require. Due to the pigments used to obtain the colour, bright or clean yel...
   Found on http://www.hobbyshed.co.uk/model_kit_mod
   
   
8. Opacity
   The ability of a paint film when applied at a given thickness to obliterate the substrate or previous coat from view.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
9. Opacity
   1. Characteristic of paper or other substrate that prevents printing on one side from showing through the other side.
   Found on http://www.tso.co.uk/solutions/publishin
   
   
10. Opacity
    The condition of being non-transparent.
    Found on http://www.diracdelta.co.uk/science/sour
    
    
11. Opacity
    A measure of how opaque a paper is. The more fibers or fillers a paper has, the more opaque it is, and the less it allows 'show- through' of the printing on the back side or on the next page. Opacity isn't always determined by thickness or weight; a thinner paper may have more opacity than a thicker paper if opacifying thickeners are used.
    Found on http://www.encyclo.co.uk/local/20829
    
    
12. opacity
    The level of transmissibility of light through a material. It refers to the ability to read markings covered by conformal coating or solder mask material on a PCA.
    Found on http://www.ami.ac.uk/courses/topics/0100
    
    
13. Opacity
    Something that reduces the passage of light often used to describe cataracts (opacity of lens.)
    Found on http://www.dwp.gov.uk/medical/med_condit
    
    
14. opacity
    Degree of density(area most dense taken for reading) Category: Medicine • a general term to describe the degree to which a material obscures a substrate Category: The chemical industry • anything which transmits(e.g.,a photographic silver deposit)1/xth part of the light falli...
    Found on http://www.mijnwoordenboek.nl/definition
    
    
15. Opacity
    The degree to which an object blocks light. Technically, opacity is expressed as a ratio of the incident light to the transmitted light.
    Found on http://www.rodsmith.org.uk/photographic%
    
    
16. Opacity
    O·pac'i·ty noun [ Latin opacitas : confer F. opacité.] 1. The state of being opaque; the quality of a body which renders it impervious to the rays of light; want of transparency; opaqueness. 2. Obscurity; want of clearness. Bp. Hall.
    Found on http://www.encyclo.co.uk/webster/O/22
    
    
17. opacity
    The degree to which smoke or particles emitted into the air reduce the transmission of light and obscure the view of an object in the background. ... (05 Dec 1998) ...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
18. opacity
    opaqueness noun the quality of being opaque to a degree; the degree to which something reduces the passage of light
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
19. opacity
    noun the phenomenon of not permitting the passage of electromagnetic radiation
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
20. opacity
    (o-pas´ĭ-te) the condition of being opaque. an opaque area.
    Found on http://www.encyclo.co.uk/local/21001
    
    
21. Opacity
    • (n.) The state of being opaque; the quality of a body which renders it impervious to the rays of light; want of transparency; opaqueness. • (n.) Obscurity; want of clearness.
    Found on http://thinkexist.com/dictionary/meaning
    
    
22. opacity
    (from the article `industrial glass`) Because electrons in glass molecules are confined to particular energy levels, they cannot absorb and reemit photons (the basic units of light ... Opacity is one of the most desired properties of printing and writing papers. Satisfactory performance of such papers requires that there be little ... ...
    Found on http://www.britannica.com/eb/a-z/o/22
    
    
23. opacity
    opacity The state of being opaque, or the degree to which something is opaque.
    Found on http://www.wordinfo.info/words/index/inf
    
    
24. Opacity
    - A measurement of how easily light passes through paper after printing.
    Found on http://www.encyclo.co.uk/local/21026
    
    
25. opacity
    Type: Term Pronunciation: ō-pas′i-tē Definitions: 1. A lack of transparency; an opaque or nontransparent area. 2. On a radiograph, a more transparent area is interpreted as an opacity to x-rays in the body. 3. Mental dullness.
    Found on http://www.medilexicon.com/medicaldictio