照射|しょうしゃshousha[1]atamadaka (head-high)
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- noun, suru verb, transitive verb, intransitive verbirradiation; radiation; beaming
- noun, suru verb, transitive verb, intransitive verbexposure (to light); illumination
Conjugation
| Dictionary form | 照射する(しょうしゃする) |
|---|---|
| Polite (masu) | 照射します(しょうしゃします) |
| Negative (nai) | 照射しない(しょうしゃしない) |
| polite (masen) | 照射しません(しょうしゃしません) |
| classical zu / nu | 照射せず・照射せぬ(しょうしゃせず・しょうしゃせぬ) |
| Past (ta) | 照射した(しょうしゃした) |
| polite (mashita) | 照射しました(しょうしゃしました) |
| Past negative (nakatta) | 照射しなかった(しょうしゃしなかった) |
| polite (masen deshita) | 照射しませんでした(しょうしゃしませんでした) |
| Te form | 照射して(しょうしゃして) |
| Potential | 照射できる(しょうしゃできる) |
| Passive | 照射される(しょうしゃされる) |
| Causative | 照射させる(しょうしゃさせる) |
| Causative passive | 照射させられる(しょうしゃさせられる) |
| Conditional (ba) | 照射すれば(しょうしゃすれば) |
| tara | 照射したら(しょうしゃしたら) |
| Volitional | 照射しよう(しょうしゃしよう) |
| polite (mashou) | 照射しましょう(しょうしゃしましょう) |
| Imperative | 照射しろ(しょうしゃしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym照らすてらすNeutralMeans to illuminate, but also to compare against or refer to, as in 「規則に照らして」; broader in use than 「照射」, which is limited to directing light or rays.
- Synonym照らし出すてらしだすNeutralA verb meaning to light up a dark place, also used figuratively for revealing the truth; it stresses the effect of illumination rather than the act of directing rays.
- Related放射ほうしゃNeutralEmission spreading outward from a center in all directions; also radiation itself. It stresses outward dispersion, while 「照射」 stresses directing rays onto a target.
- Antonym遮光しゃこうNeutralAn antonym: blocking light so it does not leak out or get in; the opposite of shining light on something.
- Antonym遮蔽しゃへいNeutralAn antonym: covering or shielding something, e.g. blocking radiation; the opposite of exposing a target to rays.
Use 「照射」 for directing light or radiation onto an object, as in 「放射線照射」. To light something up say 「照らす」 (or 「照らし出す」 for the lighting effect); 「放射」 is for emitting in all directions. The opposites are 「遮光」 and 「遮蔽」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


