# RBC

CEFR C1 · Noun

Source: https://englishreference.com/word/rbc
Updated: 2026-05-18

## Definition

Stands for Red Blood Cell. A tiny, round cell in your blood that carries oxygen to your body. Doctors count these to check if you are healthy.

For teachers: Abbreviation for Red Blood Cell. A biconcave, disc-shaped cell in the blood that contains hemoglobin and functions to transport oxygen from the lungs to the rest of the body.

## Examples

- The doctor checked my RBC count to see if I was anemic.
- A low RBC count can lead to fatigue and shortness of breath because your body isn't getting enough oxygen.
- The laboratory report indicated a significant increase in RBC production, suggesting the patient's body was responding to a high-altitude environment by producing more oxygen-carrying cells.

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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.