1820S1820s · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:1820STier 1

Ordinal

19

Pythagorean

1

Classical

18

Reverse

8

Reverse Reduction

8

Standard

60

Final Large

60

Ordinal

15

Reduced

6

Atbash

8

Isopsephy

200

Ordinal

20

Abjad

60