What does nebulizer mean?
A nebulizer is a medical device that turns liquid medicine into a fine mist that can be breathed into the lungs. It is especially associated with respiratory conditions such as asthma, bronchiolitis, and chronic obstructive pulmonary disease, and may be used in hospitals, clinics, or at home. The device can deliver medication more directly to the airways than swallowing a tablet, although the exact benefit depends on the condition and the medicine involved. Nebulizers are also used with face masks or mouthpiece attachments, making them useful for children, older adults, and anyone who has difficulty using a metered-dose inhaler. The word is common in American English; British English generally spells it "nebuliser." A nebulizer should not be confused with a vaporizer, which usually produces mist for fragrance or humidification rather than a medicinal aerosol.
nounA nebulizer is a medical device that converts liquid medication into a fine mist or aerosol for inhalation. It is commonly used to deliver medicines directly to the lungs.
- A device that atomizes liquid medication into a fine mist for inhalation.
"The doctor instructed her to use a nebulizer whenever her breathing became difficult."
"The nurse placed the medicine in the nebulizer and helped the child breathe through the mask."
"For many people with asthma, keeping a nebulizer at home provides rapid relief during a sudden attack."
The plural is used when referring to multiple devices, as in "a set of nebulizers."
"The clinic provided nebulizers and masks for patients to use at home."
A nebulizer turns liquid medicine into a breathable cloud, delivering drugs directly to the lungs.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does nebulizer come from?
The word is formed in American English from "nebulize" plus the suffix "-er." The verb ultimately derives from Latin nebula, meaning "cloud" or "mist," through the idea of making something cloudlike or turning it into a mist. Related English words include "nebula," an astronomical cloud or nebula, and "nebulous," meaning cloudlike, hazy, or indistinct. The British spelling "nebuliser" reflects the usual British preference for -ise forms.
Related word forms
How nebulizer is actually used
The spelling "nebulizer" is standard in American English, while British English generally uses "nebuliser." In medical settings, the term usually refers specifically to a device that aerosolizes liquid medication. It is distinct from a metered-dose inhaler, which delivers medication in discrete puffs.
Easily confused with nebulizer
A nebulizer is designed to produce a fine medicinal aerosol for inhalation, whereas a vaporizer generally creates a larger mist or vapor, often for fragrance or humidification.
A nebulizer creates a mist from liquid medication, while an inhaler generally delivers a measured dose from a pressurized or dry-powder device.