principal focus
| Dictionary: principal focus |
| 5min Related Video: principal focus |
| WordNet: focal point |
Note: click on a word meaning below to see its connections and related words.
The noun has one meaning:
Meaning #1:
a point of convergence of light (or other radiation) or a point from which it diverges
Synonym: focus
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 | Cassegrain focus (optics) |
| apofocus (astronomy) |
| collimator |
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. Read more |
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Mentioned in
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- apofocus (astronomy)
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