Transcription
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- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
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- [foh-sahy, -kahy]
- /ˈfoʊ saɪ, -kaɪ/
- /ˈfoʊ·kəs/
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- US Pronunciation
- US IPA
-
- [foh-sahy, -kahy]
- /ˈfoʊ saɪ, -kaɪ/
Definitions of foci word
- noun foci a plural of focus. 1
- noun plural foci a central point, as of attraction, attention, or activity: The need to prevent a nuclear war became the focus of all diplomatic efforts. 1
- noun plural foci Physics. a point at which rays of light, heat, or other radiation meet after being refracted or reflected. 1
- noun plural foci Optics. the focal point of a lens, on which rays converge or from which they deviate. the focal length of a lens; the distance from a focal point to a corresponding principal plane. the clear and sharply defined condition of an image. the position of a viewed object or the adjustment of an optical device necessary to produce a clear image: in focus; out of focus. 1
- noun plural foci Geometry. (of a conic section) a point having the property that the distances from any point on a curve to it and to a fixed line have a constant ratio for all points on the curve. 1
- noun plural foci Geology. the point of origin of an earthquake. 1
Information block about the term
Origin of foci
First appearance:
before 1635 One of the 43% oldest English words
1635-45; < Latin: fireplace, hearth
Historical Comparancy
Parts of speech for Foci
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
foci popularity
A common word. It’s meaning is known to most children of preschool age. About 88% of English native speakers know the meaning and use the word.
This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.
foci usage trend in Literature
This diagram is provided by Google Ngram ViewerSynonyms for foci
noun foci
- cores — Plural form of core.
- centres — Geometry. the middle point, as the point within a circle or sphere equally distant from all points of the circumference or surface, or the point within a regular polygon equally distant from the vertices.
- centers — Plural form of center.
- cynosures — Plural form of cynosure.
- hearts — Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.
verb foci
- concentrates — Plural form of concentrate.
- fixes — Plural form of fix.
- aims — Plural form of aim.
- rivets — a metal pin for passing through holes in two or more plates or pieces to hold them together, usually made with a head at one end, the other end being hammered into a head after insertion.
- sweats — to perspire, especially freely or profusely.
Antonyms for foci
noun foci
- exteriors — Plural form of exterior.
- peripheries — the external boundary of any surface or area.
verb foci
- divides — Separate or be separated into parts.
Top questions with foci
- how to find the foci of an ellipse?
- how to find the foci of a hyperbola?
- what does foci mean?