# สารเริ่มต้น
## Noun (N)
### Sense: a habit-forming drug that is not addictive but its use may lead to the use of other addictive drugs
- 上瘾物
- 成瘾毒品
- 易上瘾的物质
- 软毒品
### Sense: a chemical substance that is present at the start of a chemical reaction
- 反应体
- 反应物