Definition that contains thirty
- forty being ten more than thirty
- 35th the ordinal number of thirty-five in counting order
- 36th the ordinal number of thirty-six in counting order
- 34th the ordinal number of thirty-four in counting order
- 38th the ordinal number of thirty-eight in counting order
- xl being ten more than thirty
- 32nd the ordinal number of thirty-two in counting order
- 33rd the ordinal number of thirty-three in counting order
- 37th the ordinal number of thirty-seven in counting order
- 39th the ordinal number of thirty-nine in counting order