# PPI

CEFR B2 · Noun

Source: https://englishreference.com/word/ppi
Updated: 2026-07-22

## Definition

A way to measure how clear a screen or digital picture looks. It counts how many tiny dots of color are in one inch; more dots mean a sharper, better image.

For teachers: An abbreviation for Pixels Per Inch, used to quantify the resolution or pixel density of electronic displays and digital images. A higher PPI value indicates that pixels are smaller and more tightly packed, resulting in greater detail and less visible graininess to the human eye.

## Examples

- This new smartphone has a very high PPI, so the text looks perfectly smooth.
- When you print a photo, you need a high PPI to make sure the image doesn't look blurry.
- While screen size is important, the PPI is often a better indicator of visual quality because it measures how densely the information is packed.

## Usage notes

- Usually used with the definite article ('the PPI').

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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.