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English Fox - English Dictionary
Meaning of
foci
in English
foci
us
/ˈfoʊ.saɪ/
uk
/ˈfoʊ.saɪ/
#uncommon
Lemma:
focus
The lemma is the base or root form of this word.
Definitions
Noun
plural
of
focus
;
points
of
convergence
points
where
light
rays
converge
(
optics
)
key
points
of
a
conic
section
(
geometry
)
center
of
attention
or
concentration
the
underground
point
of
an
earthquake's
origin
