extensive · doctorate

1. Origins, structure, and basic meaning

• Structure: 博 conveys breadth or abundance; its on-reading is はく.
• Basic usage: 博物館 means museum; 博士 can identify a knowledgeable person or a doctor, depending on its reading and context.

2. Common pitfalls and similar expressions

• Two readings of 博士
  • 博士 read はかせ is used as a title for a knowledgeable person; はくし is used for a doctoral degree or its holder.
• Explicitly naming a degree
  • 博士号を取得した means earning a doctorate. Distinguish this expression of earning a degree from calling someone はかせ in a story.