改定

1. Origins, structure, and basic meaning

• Structure: 改定 is read as かいてい and can mean “revision” or “amendment”, depending on context.
• Basic usage: The examples show terms of use revised next month and a committee-approved fee revision.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It is revising established rules, rates, or figures; 改正 is especially common for correcting or amending laws.