Noun: focus
| Singular | focus |
| Plural | foci; focuses; focusses |
Sample Sentences
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The heat of sunlight at the focus of a magnifying glass can easily set dry leaves on fire.
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Unfortunately, the license plate is out of focus in this image.
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Not long ago, it was difficult to produce photographs of tiny creatures with every part in focus.[…]A photo processing technique called focus stacking has changed that. Developed as a tool to electronically combine the sharpest bits of multiple digital images, focus stacking is a boon to biologists seeking full focus on a micron scale. [2013 July-August, Catherine Clabby, “Focus on Everything”, in American Scientist:]
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During this scene, the boy’s face shifts subtly from soft focus into sharp focus.
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I believe I can bring the high degree of focus required for this important job.
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My studies are my main focus right now.
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The earthquake's focus was at exactly 37 degrees north, 18 degrees south, seventy five meters below the ground.
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Text entered at the keyboard or pasted from a clipboard is sent to the component which currently has the focus.
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Candles, in fact, are an essential ingredient in many spells. They can be used as either the focus of the spell or as a component that sets the spell's overall mood and tone. [2004, Marian Singer, Trish MacGregor, The Only Wiccan Spell Book You'll Ever Need:]
Etymology
1. Borrowed from Latin focus (“hearth, fireplace”); see there for more. Related to fuel.
2. Kepler introduced the term into mathematics and the sciences in describing elliptical orbits of planets (quote from Nicholas Mee) :
3. "One of the interesting properties of an ellipse is that if there were a light bulb at one focus, then all the light that it emits would reflect off the ellipse and converge at the other focus. This is why Kepler originally used the name focus for these points." See: Latin Nouns '
focus'.
Verbs referencing "focus"
Dutch Nouns
focus, Spanish Nouns
fuego, Irish Nouns
fócas.