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focus

Definition from Dictionary, a free dictionary
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English

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Etymology

[[w:Template:lang:la language|Template:lang:la]][[Category:Template:lang:la derivations]] focus (hearth, fireplace), of unknown origin.

Pronunciation

Noun

Singular
focus

Plural
foc

focus (foc)
  1. (Template loop detected: Template:context 1) 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.
  2. (Template loop detected: Template:context 1) a point of a conic at which rays reflected from a curve or surface converge.
  3. (Template loop detected: Template:context 1) The fact of the convergence of light on the photographic medium.
    Unfortunately, the license plate is out of focus in this image.
  4. (Template loop detected: Template:context 1) 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.
  5. (uncountable) concentration of attention.
    I believe I can bring the high degree of focus required for this important job.
  6. (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.
  7. (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.

Translations

Verb

Infinitive
to focus

Third person singular
focuses or, less commonly, focusses

Simple past
focused or, less commonly, focussed

Past participle
-

Present participle
focusing or, less commonly, focussing

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)
  1. (transitive) To cause (rays of light, etc) to converge at a single point.
  2. (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.
  3. (Template loop detected: Template:context 1) To concentrate one's attention.
    Focus on passing the test.
  4. (transitive) To make (a liquid) less diluted.
  5. (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


Latin

Noun

focus (genitive focī); m, second declension (Diminutive: foculus)

  1. hearth, fireplace

Inflection

Second declension (2).

Number Singular Plural
nominative focus focī
genitive focī focōrum
dative focō focīs
accusative focum focōs
ablative focō focīs
vocative foce focī

Related terms

Descendants

Elsewhere on the web

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