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English to English noun
| 1 |
a point of convergence of light (or other radiation) or a point from which it diverges |  | source: wordnet30
| 2 |
a central point or locus of an infection in an organism | | Example: the focus of infection
source: wordnet30
| 3 |
the concentration of attention or energy on something | | Example: the focus of activity shifted to molecular biology
he had no direction in his life
source: wordnet30
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