# cro

/ˈkɹoʊ/ (US) · CEFR C1 · Noun

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

## Definition

The process of making changes to a website or app so that more visitors do things you want them to do, like buying a product or signing up for a newsletter.

For teachers: Conversion Rate Optimization (CRO) is the systematic process of increasing the percentage of website visitors who take a specific desired action. It involves understanding user behavior and testing site improvements to reduce friction in the customer journey.

## Examples

- Our team is focusing on CRO to help increase our online sales.
- By improving the checkout process, the CRO specialist helped the company turn more browsers into buyers.
- After analyzing the user data, we implemented several CRO strategies to ensure that the landing page was more effective at capturing email signups.

## Usage notes

- Commonly used in business and medical contexts; often functions as a modifier in phrases like 'CRO industry' or 'CRO services.'

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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.