irradiated
irradiated — adjective
1. describes food, medical supplies, or other materials that have been deliberately
describes food, medical supplies, or other materials that have been deliberately exposed to controlled radiation, usually to kill germs, preserve freshness, or sterilize equipment
Some supermarkets in Japan sell irradiated potatoes to keep them from sprouting during storage.
collocation: irradiated + food type (potatoes)
The hospital orders irradiated blood for patients whose immune systems are very weak.
domain: medical use of irradiated blood products
Irradiated strawberries stay fresh longer than untreated ones, which helps reduce food waste.
- radiated
less common as an adjective; can mean shaped like spokes rather than treated
- sterilized
narrower — focuses on germ-killing, not preservation or other effects
文法句型
irradiated + noun
用法筆記
The noun being described must be something deliberately treated with radiation in a controlled process — not naturally exposed (use 'exposed to radiation' for accidental or natural exposure).
常見錯誤
irradiated — verb
1. to treat an object, substance, or part of the body with a controlled amount of r
to treat an object, substance, or part of the body with a controlled amount of radiation — used, for example, to destroy cancer cells, kill bacteria in food, or alter the properties of materials in a laboratory
Doctors irradiated the tumor with a focused beam of high-energy X-rays over six weeks.
passive pattern: irradiate a tumor with + radiation type
The food safety team irradiated the imported spice mix to eliminate any harmful bacteria.
purpose: to eliminate bacteria (food safety)
Japanese researchers irradiated a ceramic sample with neutrons to test how its structure changed under extreme conditions.
- treat (with radiation)
broader; does not specify the method
- expose (to radiation)
less controlled; can describe accidental exposure
- sterilize
narrower — implies killing microorganisms as the goal
文法句型
irradiate + noun phrase (object)
be irradiated with + gamma rays / X-rays / electrons
用法筆記
Often appears in passive voice (e.g., 'the samples were irradiated'). The agent is typically a person or institution; the instrument is named with 'with' (e.g., 'irradiated with gamma rays').
常見錯誤
2. to shine light directly onto something so that it becomes clearly visible, often
to shine light directly onto something so that it becomes clearly visible, often creating a striking visual effect — used mainly in descriptive or literary writing
Morning sunlight irradiated the valley, turning the mist into a golden haze.
literary: natural light (sunlight) as subject
A single kerosene lamp irradiated the narrow hallway with a soft, warm glow.
The full moon irradiated the surface of the lake, creating a long silver reflection.
- illuminate
more common in both formal and everyday writing
- light up
informal phrasal verb; suitable for conversation
- flood (with light)
emphasizes a large amount of light covering an area
文法句型
irradiate + noun phrase (what is lit)
用法筆記
Primarily found in literary or poetic writing. In everyday English, 'illuminate', 'light up', or 'flood with light' are far more common. This sense is almost never used in conversation.
常見錯誤
3. to fill someone's mind with a sudden, deep understanding or spiritual insight —
to fill someone's mind with a sudden, deep understanding or spiritual insight — as if a light had been turned on inside their thoughts, especially about moral, philosophical, or religious truths
The monk's quiet teachings irradiated the students with a sense of inner peace and purpose.
figurative: teachings as subject, mind as object
Reading the philosopher's old letters irradiated Rosa's understanding of justice and compassion.
A moment of silence in the temple irradiated Boris's mind with unexpected clarity.
- enlighten
more common and less formal; can be used in everyday contexts
- illuminate (figurative)
same metaphor but more widely used
- inspire
broader; can mean motivating action, not just understanding
文法句型
irradiate + noun phrase (mind / soul / understanding)
用法筆記
Fully figurative — the subject is always an idea, experience, teaching, or practice, never a person directly. The object is typically an abstract noun like 'mind', 'soul', 'understanding', or 'spirit'.