the centre of interest or activity

this generation has made the environment a focus of attention

the state or quality of having or producing clear visual definition

his face is rather out of focus

the incident brought her feelings for Alexander sharply into focus

one of the fixed points from which the distances to any point of a given curve, such as an ellipse or parabola, are connected by a linear relation

an element of a sentence that is given prominence by intonational or other means

adapt to the prevailing level of light and become able to see clearly

try to focus on a stationary object

pay particular attention to

the study will focus on a number of areas in Wales

place the focus on (an element of a sentence)