In this Act the expressions listed below are defined by, or otherwise fall to be construed in accordance with, the provisions indicated—
| the Assembly | section 1(1) |
| Assembly constituency | section 2(2) and Schedule 1 |
| Assembly electoral region | section 2(2) and Schedule 1 |
| Assembly First Secretary | section 53 |
| Assembly general subordinate legislation | section 58(6) |
| Assembly members | section 2(3) |
| Assembly Secretary | section 53 |
| Audit Committee | section 60 |
| Auditor General for Wales | section 90(1) |
| Committee of Public Accounts | section 155(4) |
| Community law | section 155(1) |
| constituency vote | section 4(2) |
| the Convention rights | section 107(5) |
| cross-border body | paragraph 3(2) of Schedule 3 |
| delegate | section 155(1) |
| deputy presiding officer | section 52(1)(b) and (2) |
| electoral region figure | section 6(3) |
| electoral region vote | section 4(3) |
| enactment | section 155(1) |
| English border area | paragraph 3(2) of Schedule 3 |
| executive committee | section 56 |
| financial year | section 155(3) |
| first financial year of the Assembly | section 155(3) |
| functions | section 155(1) |
| largest party with an executive role | section 59(7) |
| local government scheme | section 113(1) |
| Minister of the Crown | section 155(1) |
| ordinary election | section 2(4) |
| Partnership Council | section 113(2) |
| presiding officer | section 52(1)(a) and (2) |
| regional committee | section 61 |
| regional returning officer | section 11(6) |
| registered political party | section 4(8) |
| regulatory appraisal | section 65(1) |
| relevant Parliamentary procedural provision | section 44(3) |
| subject committee | section 57 |
| subordinate legislation | section 155(1) |
| subordinate legislation procedures | section 64 |
| subordinate legislation scrutiny committee | section 58 |
| Wales | section 155(1) and (2) |
| Welsh Administration Ombudsman | section 111 |
| Welsh public records | section 118 |