Meaning & use
foci
Last updated
The plural of 'focus,' referring to multiple central points of interest, activity, or attention.
See it in a sentence
The conference had three main foci: education, health, and climate policy.
An ellipse is defined by two fixed points called foci.
A note on using this word
The irregular Latin-style plural is standard in academic and scientific writing, though 'focuses' is also acceptable in everyday English.
Words with a similar meaning
centersfocal points
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