1. (mathematics) short for 代數邏輯／代数逻辑 (“algebraic logic”)
2. logic; reason; reasoning; law; rationale
3. logical
4. short for 代數邏輯／代数逻辑 (“algebraic logic”)
5. short for 邏輯學／逻辑学 (luójíxué, “logic (systematic study of the form of arguments)”)

1. gate
2. door
3. gateway
4. doorway
5. opening
6. valve
7. switch
8. way to do something
9. knack
10. family
11. house
12. (religious) sect
13. school (of thought)
14. class
15. category
16. phylum or division (taxonomy)
17. classifier for large guns
18. classifier for lessons, subjects, branches of technology
19. (suffix) -gate (i.e. scandal; derived from Watergate)

classifiers: 扇, 個