diffuser
diffuser — noun
- diffusersingular
- diffusersplural
1. a container that uses water and vibrations or air pressure to turn a liquid — ty
a container that uses water and vibrations or air pressure to turn a liquid — typically water mixed with essential oils — into a fine mist that spreads through the air, used to add pleasant smells or moisture to a room
The yoga instructor filled the diffuser with water and drops of lavender oil before class.
fill the diffuser with water and [oil]
A small diffuser on the office desk spreads a light lemon scent throughout the room.
An ultrasonic diffuser uses sound waves to turn water and oil into a fine mist.
Reed diffusers in the hotel lobby keep the air fresh without any flame.
After running for six hours, the diffuser stops automatically when the water inside runs out.
- aroma diffuser
a product name emphasising the scent-spreading function
- essential oil diffuser
a product name specifying the type of liquid used
- atomizer
a small spray bottle for perfume or cologne, usually without water
- mister
a simple spray device for water, often used for plants or cooling
文法句型
diffuser + for + [oil/perfume/liquid]
fill + [the/a] diffuser + with + [water + oil]
用法筆記
This is the most common household sense of 'diffuser'. Often combined with 'essential oil', 'aroma', or 'reed' in product names. A 'reed diffuser' uses no electricity — it relies on rattan sticks to draw scented oil upward.
常見錯誤
2. a round, bowl-shaped attachment that fits onto the nozzle of a hairdryer, design
a round, bowl-shaped attachment that fits onto the nozzle of a hairdryer, designed to spread the hot air over a wide area instead of blasting it directly — used to dry curly or wavy hair gently and reduce frizz
The hairdresser clipped a diffuser onto the hairdryer before drying the client's curly hair.
clip a diffuser onto a hairdryer for curly hair
Without the diffuser, the hairdryer's hot air hits one spot and can damage fine hair.
After washing her hair, Mei snapped the diffuser onto the hairdryer and gently dried each curl.
A good diffuser helps people with wavy hair achieve more volume and less frizz.
The salon uses a large diffuser attachment on every hairdryer for customers with textured hair.
- hairdryer attachment
a general term for any part added to a hairdryer
- curly-hair diffuser
a product name emphasising the target hair type
- nozzle concentrator
a hairdryer attachment that directs air into a narrow, strong stream
文法句型
diffuser + attachment + for + [hairdryer]
attach/fit/snap + a diffuser + to/onto + [hairdryer]
用法筆記
In hairdressing, 'diffuser' alone usually refers to this bowl-shaped attachment designed for curly or wavy hair. It is also called a 'hairdryer diffuser' or 'diffuser attachment'. Straight-haired users rarely need one.
常見錯誤
3. a cover or screen placed over a light source to make the light softer, more even
a cover or screen placed over a light source to make the light softer, more evenly spread, and less harsh — used in photography, film-making, and interior lighting to reduce hard shadows or glare
The photographer attached a diffuser to the lamp to soften shadows on the model's face.
attach a diffuser to [light source] to soften shadows
A fabric diffuser clipped over a desk lamp creates a warm, even reading light.
Without a diffuser, the ceiling light casts sharp shadows onto the wall behind the sofa.
The museum installed frosted diffusers over display cases to protect paintings from strong light.
- softbox
a specific box-shaped light diffuser used in professional photography
- scrim
a fabric diffuser placed in front of a light source, common on film sets
- frosted glass panel
a panel made of translucent glass that spreads light, often used in interior lighting
- spotlight reflector
a device that concentrates light into a narrow beam instead of spreading it
文法句型
diffuser + for + [device/light source]
attach/fit + a diffuser + to/over + [light source]
用法筆記
Common in photography and interior-lighting contexts. Frequently appears as part of a compound noun: 'light diffuser', 'lamp diffuser', or 'flash diffuser'. A specific type used in photography studios is called a 'softbox'.