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Foci
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Revision as of 01:17, 13 December 2020
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Noun - focus, Plural - countable and uncountable; '''foci''' or focuses
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[[Image:lighterstill.jpg]][[Image:Foci.jpg|right|frame|<center>Formation of nuclear "foci"</center>]]
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Noun -
[[
focus
]]
, Plural - countable and uncountable; '''foci''' or focuses
*1. (countable) (optics) a point at which reflected or refracted rays of light converge.
*1. (countable) (optics) a point at which reflected or refracted rays of light converge.
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*6. (countable) the exact point of where an earthquake occurs, in three dimensions.
*6. (countable) the exact point of where an earthquake occurs, in three dimensions.
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The earthquake's focus was at exactly 37 degrees north, 18 degrees south, seventy five meters below the ground.[
http
://en.wiktionary.org/wiki/focus]
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The earthquake's focus was at exactly 37 degrees north, 18 degrees south, seventy five meters below the ground.[
https
://en.wiktionary.org/wiki/focus
]
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[[Category: General Reference]
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