放射能|ほうしゃのうhoushanou[3]nakadaka (mid-high)
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- nounradioactivity
- nounradiation
- nounradioactive material
- Related放射線ほうしゃせんNeutralRefers to the rays themselves, e.g. α and γ rays. 「放射能」 properly means the ability to emit such rays, though colloquially it also covers rays and radioactive material.
- Related放射ほうしゃNeutralThe phenomenon of emitting outward, as of light or heat. 「放射能」 refers specifically to radioactivity, not the act of radiating.
- Related輻射ふくしゃWrittenWritten/formal prose term for radiation of heat or electromagnetic waves, as in 「輻射熱」. Everyday speech uses 「放射」.
Use 「放射能」 for the ability or property of emitting radiation (colloquially also radioactive material, as in 「放射能汚染」); 「放射線」 for the rays themselves; 「放射」 for the act of radiating; 「輻射」 for heat radiation in formal writing.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


