What does emitting mean?
Emitting is the present participle of the verb "emit," meaning to send out or give off something — whether light, heat, sound, gas, odor, or radiation. It is a versatile and precise word common in scientific, technical, and environmental writing: a furnace may be emitting heat, a radio tower emitting signals, and a vehicle emitting carbon dioxide. The verb derives from the Latin emittere, meaning "to send out," formed from e- (out) and mittere (to send). While neutral in many contexts, emitting often carries a negative connotation in discussions of pollution, where emissions of greenhouse gases are a central concern of climate policy. In everyday speech, people tend to favor simpler alternatives such as "giving off" or "letting out," reserving "emitting" for more formal or technical description. Its noun form, "emission," is especially widespread in modern usage, appearing everywhere from automotive regulations to astrophysics.
verbPresent participle of the verb "emit": to send out or give off something such as light, heat, sound, gas, or radiation.
- To give off or discharge light, heat, sound, gas, or radiation.
- (Of devices or systems) to send out signals or data.
"The factory was fined for emitting toxic fumes into the atmosphere."
"The lighthouse was emitting a steady beam across the foggy bay."
"Older refrigerators were notorious for emitting chlorofluorocarbons that damaged the ozone layer."
Every time you speak, you are emitting — and so is every star in the sky; few verbs cover both your voice and supernovae.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of emitting
Emitting traces back to the Latin verb emittere, formed from the prefix e- ("out") and mittere ("to send"). The English verb "emit" was adopted in the early 17th century, likely via Latin participial forms, with "emitting" as its present participle. It shares its root with a broad family of English words derived from mittere and its supine stem miss-, including "mission," "missive," "transmit," and "dismiss." The related noun "emission" entered English slightly earlier and remains the word's most common derivative today.
Related word forms
How emitting is actually used
Mostly used in technical, scientific, and environmental registers; everyday speech often prefers simpler phrases like "giving off" or "putting out." Frequently appears in discussions of pollution and greenhouse gases, where "emitting" carries a mildly negative connotation.
Easily confused with emitting
"Admitting" means allowing entry or acknowledging a fact, while "emitting" means sending something outward.