C1adjective10K+

Optical

UK /["/ˈɒptɪkl/"]/US /["/ˈɑːptɪkl/"]/

Definition

connected with the sense of sight or the relationship between light and sight

In simple words: Related to sight or vision.

Examples

  • optical effects
  • optical aids
  • optical instruments such as microscopes and telescopes
  • optical storage
  • an optical disk/drive/mouse

Usage notes

Commonly used in scientific contexts or when discussing vision, such as 'optical illusion' or 'optical devices'. Not typically used in casual conversation.

Grammar pattern

standalone adjective

Memory hint

Think of 'optical' like 'optics' — both focus on eyes and light.

Collocations

  • optical illusion
  • optical fiber
  • optical system
  • optical lens
  • optical device

Synonyms

  • visual
  • sight-related
  • eye-related
  • luminous
  • graphic

Antonyms

  • non-optical
  • nonvisual

Common mistakes

  • Confused with 'optics' which refers to the study of light and vision.
  • Overused in everyday language, where simpler words like 'visual' are more appropriate.