focus

B2
Pronunciation
/ˈfəʊ.kəs/
/ˈfoʊ.kəs/
Noun
9 definition(s)
1 Definition

A point at which reflected or refracted rays of light converge.

Example Sentences
  • The heat of sunlight at the focus of a magnifying glass can easily set dry leaves on fire.
2 Definition

A point of a conic at which rays reflected from a curve or surface converge.

3 Definition

The fact of the convergence of light on the photographic medium.

Example Sentences
  • Unfortunately, the license plate is out of focus in this image.
4 Definition

The quality of the convergence of light on the photographic medium.

Example Sentences
  • During this scene, the boy’s face shifts subtly from soft focus into sharp focus.
5 Definition

Concentration of attention.

Example Sentences
  • I believe I can bring the high degree of focus required for this important job.
6 Definition

The exact point of where an earthquake occurs, in three dimensions (underneath the epicentre).

Example Sentences
  • The earthquake's focus was at exactly 37 degrees north, 18 degrees south, seventy five meters below the ground.
7 Definition

The indicator of the currently active element in a user interface.

Example Sentences
  • Text entered at the keyboard or pasted from a clipboard is sent to the component which currently has the focus.
8 Definition

The most important word or phrase in a sentence or passage, or the one that imparts information.

9 Definition

An object used in casting a magic spell.

Verb
5 definition(s)
1 Definition

(followed by on or upon) To concentrate one's attention.

Example Sentences
  • I have to focus on my work.
2 Definition

To cause (rays of light, etc) to converge at a single point.

3 Definition

To adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane.

Example Sentences
  • You'll need to focus the microscope carefully in order to capture the full detail of this surface.
4 Definition

To concentrate one’s attention.

Example Sentences
  • If you're going to beat your competitors, you need to focus.
5 Definition

To transfer the input focus to (a visual element), so that it receives subsequent input.

Example Sentences
  • The text box won't receive the user's keystrokes unless you explicitly focus it.