# optically

/ˈɑptɪkɫi/ (US) · /ˈɒptɪkli/ (UK) · CEFR C1 · Adverb

Source: https://englishreference.com/word/optically
Updated: 2026-05-30

## Definition

in a way that relates to how light works or how things look. You use this when talking about how light travels or how a lens changes an image.

For teachers: in a manner relating to the properties of light or the science of vision. Often describes the behavior of light as it interacts with materials or the performance of optical instruments.

## Examples

- The new glasses are optically perfect.
- The scientist studied how the material reacts optically when exposed to different wavelengths of light.
- While the lens is optically superior, its physical weight makes it impractical for handheld photography in low-light conditions.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.