focal point

Noun
  1. A point of convergence of light (or other radiation) or a point from which it diverges (synset 111476112)
    is a type of: point - the precise location of something; a spatially limited location
    same as: focus
  2. A central point or locus of an infection in an organism (synset 114206179)
    "the focus of infection"
    is a type of: point - the precise location of something; a spatially limited location
    is a part of: focal infection - bacterial infection limited to a specific organ or region especially one causing symptoms elsewhere
    same as: focus, nidus
  3. The concentration of attention or energy on something (synset 105712641)
    "the focus of activity shifted to molecular biology"; "he had no direction in his life"
    is a type of: absorption, concentration, engrossment, immersion - complete attention; intense mental effort
    subtypes: particularism - a focus on something particular
    same as: centering, direction, focus, focusing, focussing

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