# CFL

CEFR B2 · Noun

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

## Definition

Stands for Compact Fluorescent Lamp. A small, energy-efficient light bulb that looks like a regular light bulb but uses less electricity and lasts longer.

For teachers: Abbreviation for Compact Fluorescent Lamp. A type of fluorescent lamp designed to replace traditional incandescent bulbs, offering higher energy efficiency and a longer operational lifespan.

## Examples

- We replaced all our old bulbs with CFLs to save money.
- The government introduced a tax on incandescent bulbs to encourage the public to switch to more energy-efficient options like the CFL.
- While the initial cost of a CFL is higher than that of an incandescent, the significant reduction in energy consumption over its lifetime makes it a more economical choice for most households.

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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.