Definition from Wiktionary, a free dictionary
English
Wikipedia
Etymology
Latin focus (“‘hearth, fireplace’”), of unknown origin.
Pronunciation
Noun
focus (countable
and uncountable; plural foci or focuses)
- (countable, optics) a point at which reflected or refracted rays
of light converge.
- The heat of sunlight at the focus of a
magnifying glass can easily set dry leaves on fire.
- (countable, geometry) a point of a conic at which rays reflected from a curve or surface converge.
- (uncountable,
photography,
cinematography) The fact of the convergence
of light on the photographic medium.
- Unfortunately, the license plate is out of
focus in this image.
- (uncountable,
photography,
cinematography) The quality of the
convergence of light on the photographic medium.
- During this scene, the boy’s face shifts subtly from soft
focus into sharp focus.
- (uncountable) concentration of attention.
- I believe I can bring the high degree of
focus required for this important job.
- (countable) the
exact point of where an earthquake occurs, in three dimensions.
- The earthquake's focus was at exactly 37
degrees north, 18 degrees south, seventy five meters below the
ground.
- (computing) The
indicator of the currently active element in a user interface.
- Text entered at the keyboard or pasted from a clipboard is
sent to the component which currently has the
focus.
- (linguistics)
This word needs a definition. Please help out and add a
definition, then remove the text
{{rfdef}}.
Translations
in mathematics
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- German: Brennpunkt m.
- Japanese: 焦点 ja(ja) (shōten)
- Portuguese: foco pt(pt) m.
- Russian: фокус (fókus) m., фокальная точка
(fokál’naja tóčka) f.
- Spanish: foco es(es) m.
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fact of the convergence of light
on the photographic medium
quality of the convergence of
light on the photographic medium
concentration of attention
exact point of where an
earthquake occurs
Verb
to focus
(third-person singular simple present focuses or, less
commonly, focusses, present
participle focusing or, less
commonly, focussing, simple past
and past participle focused or, less
commonly, focussed)
- (transitive) To
cause (rays of light, etc) to converge at a single point.
- (transitive) To adjust (a lens, an optical instrument) in order to position
an image with respect to the focal plane.
- You'll need to focus the microscope
carefully in order to capture the full detail of this
surface.
- (transitive,
followed by on or
upon) To concentrate one's attention.
- Focus on passing the test.
- (transitive) To
make (a liquid) less diluted.
- (intransitive) To concentrate one’s attention.
- If you're going to beat your competitors, you need to
focus.
Usage
notes
The spellings focusses, focussing, focussed are chiefly British
while the spellings focuses, focusing, focused are preferred in the
US.
Derived
terms
Related
terms
Translations
cause (rays of light, etc) to
converge at a single point
to adjust (a lens, an optical
instrument)
transitive: to concentrate one's
attention
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- Japanese: 集める ja(ja) (chūmoku wo atsumeru)
- Portuguese: focalizar pt(pt)
- Russian: сосредоточивать (sosredotóčivat’), концентрировать
(kontsentrírovat’)
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make (a liquid) less
diluted
- Japanese: 濃縮する ja(ja) (nōshuku suru)
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- Russian: концентрировать (kontsentrírovat’)
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intransitive: to concentrate
one's attention
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- Italian: concentrarsi it(it)
- Japanese: 集中する ja(ja) (shūchū suru)
- Russian: сосредоточиваться (sosredotóčivat’sja),
концентрироваться (kontsentrírovat’sja)
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Italian
Noun
focus m. inv.
- focus (all senses)
Latin
Noun
focus (genitive focī); m, second
declension
- hearth, fireplace
Inflection
Derived
terms
Related
terms
- focacius
- focarius
- focillare
- foculare
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