素因

• Reading: そいん
• Romaji: soin
• Kanji breakdown: 素 (so) — element, basic; 因 (in) — cause, factor
• Pronunciation: /so.iɴ/

Meaning

Predisposing factor; basic cause; predisposition.

A noun referring to an underlying or predisposing factor that contributes to a condition or outcome. Most commonly used in medical and scientific contexts to describe genetic or constitutional predispositions to diseases. Also used more broadly to mean a fundamental contributing factor. In mathematics, 素因数 refers to a prime factor.

Examples

1. 遺伝的な素因がこの病気に関係している。 Genetic predisposition is linked to this disease.
2. 事故の素因を詳しく分析する必要がある。 It is necessary to analyze the underlying factors of the accident in detail.
3. アレルギー体質は喘息の素因の一つとされている。 An allergic constitution is considered one of the predisposing factors for asthma.

Usage Guide

Context: medical, science, analysis

Tone: neutral

Origin & History

From Sino-Japanese 素因. 素 (so) means element or basic, and 因 (in) means cause or factor. Together they describe a fundamental causal element, especially one that predisposes toward a particular outcome.

Cultural Context

Era: Modern

Generation: All ages

Social background: Educated