# binocular

/bəˈnɑkjəɫɝ/ (US) · /bɪnˈɒkjʊlɐ/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/binocular
Updated: 2026-10-18

## Definition

using both eyes at the same time to see something.

For teachers: Involving or adapted for the use of both eyes simultaneously. Typically placed before nouns denoting optical instruments or visual processes, such as 'microscope' or 'vision'.

## Examples

- Owls have excellent binocular vision for hunting.
- The eye doctor tests my binocular vision to check how well my eyes work together.
- The new microscope provides a sharp binocular image that reduces eye strain during long hours of laboratory work.

## Usage notes

- Typically placed before the noun it modifies, as in 'binocular vision'.

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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.