拡散|かくさんkakusan[0]heiban (flat)
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Definitions
- noun, suru verb, intransitive verbspreading; disseminating; scattering
- noun, suru verb, intransitive verbdiffusion (of light, gas)
Conjugation
| Dictionary form | 拡散する（かくさんする） |
|---|---|
| Polite (masu) | 拡散します（かくさんします） |
| Negative (nai) | 拡散しない（かくさんしない） |
| polite (masen) | 拡散しません（かくさんしません） |
| classical zu / nu | 拡散せず・拡散せぬ（かくさんせず・かくさんせぬ） |
| Past (ta) | 拡散した（かくさんした） |
| polite (mashita) | 拡散しました（かくさんしました） |
| Past negative (nakatta) | 拡散しなかった（かくさんしなかった） |
| polite (masen deshita) | 拡散しませんでした（かくさんしませんでした） |
| Te form | 拡散して（かくさんして） |
| Potential | 拡散できる（かくさんできる） |
| Passive | 拡散される（かくさんされる） |
| Causative | 拡散させる（かくさんさせる） |
| Causative passive | 拡散させられる（かくさんさせられる） |
| Conditional (ba) | 拡散すれば（かくさんすれば） |
| tara | 拡散したら（かくさんしたら） |
| Volitional | 拡散しよう（かくさんしよう） |
| polite (mashou) | 拡散しましょう（かくさんしましょう） |
| Imperative | 拡散しろ（かくさんしろ） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Synonym拡大かくだいNeutralScale or range growing larger, also enlarging images; 「拡散」 stresses scattering outward.
- Synonym散乱さんらんWrittenWritten: things lying scattered messily, as in 「ゴミが散乱する」; describes a state, while 「拡散」 describes the spreading process.
- Synonym発散はっさんNeutralHeat or smells radiating outward, also venting feelings, as in 「ストレス発散」; 「拡散」 stresses diffusing outward.
- Synonym行き渡るいきわたるNeutralReaching every corner so that everyone has a share; 「拡散」 stresses the outward process of spreading.
- Related広まるひろまるNeutralFor rumours and trends spreading through society and growing in range; 「拡散」 stresses scattering outward, and is also the word for reposting online.
- Related広がるひろがるNeutralThe broadest in range: areas expanding, scenery opening up, folded things unfolding. 「拡散」 focuses on information or matter scattering outward.
- Related浸透しんとうNeutralLiquids or ideas slowly permeating inward, also breaking into a market; 「拡散」 stresses spreading outward.
- Related蔓延まんえんWrittenWritten: diseases and bad practices spreading, with negative colouring; 「拡散」 itself carries no positive or negative judgement.
- Related普及ふきゅうNeutralTechnology or products reaching the hands of many, as in 「スマホの普及」; 「拡散」 focuses on information or matter scattering.
- Related散布さんぷNeutralTransitive: deliberate spraying or scattering by people, as in 「農薬散布」; the objects are mostly chemicals or powder. 「拡散」 is for information, gas and the like.
- Related伝播でんぱWrittenWritten: culture, sound and radio waves spreading, stressing delivery over distance; 「拡散」 stresses scattering in all directions.
- Related流布るふWrittenWritten: claims or editions of books circulating in society; 「拡散」 stresses the outward process of scattering.
- Related流通りゅうつうNeutralGoods and money circulating, or air flowing through; 「拡散」 focuses on information or matter scattering.
- Related波及はきゅうWrittenWritten: influence spreading outward in waves, usually adverse; 「拡散」 is about the thing itself scattering.
- Related伝わるつたわるNeutralInformation or feelings reaching the other party, also being handed down or introduced; 「拡散」 stresses scattering outward.
- RelatedはびこるNeutralWeeds growing thick or bad things running rampant, strongly pejorative; 「拡散」 is neither positive nor negative.
- Related拡張かくちょうWrittenWritten: extending territory, facilities or functions, as in 「拡張機能」; 「拡散」 stresses scattering outward.
- Related染み渡るしみわたるWrittenWritten register: liquids, light or feelings soaking into every corner. 「拡散」 means scattering outward and does not stress soaking in.
- Related染みとおるしみとおるNeutralLiquids soaking in deep, or figuratively sinking deep into the heart; 「拡散」 stresses spreading outward.
- Related伝搬でんぱんWrittenWritten, mostly in physics: waves and signals travelling through a medium; 「拡散」 stresses scattering in all directions.
- Related瀰漫びまんWrittenWritten: an atmosphere or mood pervading a whole scene; 「拡散」 stresses the process of scattering.
- Related散開さんかいWrittenWritten: troops or groups dispersing and deploying, mostly military; 「拡散」 is for matter or information scattering.
- Antonym収束しゅうそくWrittenAntonym on the scatter-vs-gather axis: a situation settling down, or values converging. Written register.
- Antonym集中しゅうちゅうNeutralAntonym on the scatter-vs-gather axis: gathering in one place, or focusing attention.
Use 「拡散」 for information or matter scattering in all directions, including reposting online. For rumours spreading through society pick 「広まる」, for popularizing technology or products 「普及」, for a disease or bad practice rampaging 「蔓延」. The antonyms are 「集中」 (gathering in one place) and 「収束」 (settling a situation).
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese definitions
Kanji in this word
English equivalents
See also
