Why is the perfect tense called perfect?

Related questions

1. What is the example of present perfect continuous tense?
2. What is present perfect tense and past perfect tense?
3. What is the rule of present perfect continuous tense?
4. What is perfect participle?
5. What does present perfect mean?
6. Where do we use present perfect tense?
7. What is difference between present perfect and present perfect continuous?
8. Why is perfect tense called perfect?
9. What is the rule of present perfect?
10. When I use present perfect and present perfect continuous?

Tags

1. #tense
2. #called
3. #present
4. #aspect
5. #grammatical
6. #because
7. #completed
8. #comes
9. #perfect
10. #achieved
11. #latin
12. #combines
13. #perfectus
14. #finished