noun, plural -tos, adverb, verb, -toed, -to⋅ing.| 1. | the aforesaid; the above; the same (used in accounts, lists, etc., to avoid repetition). Abbreviation: do. Symbol: ″. Compare ditto mark. |
| 2. | another of the same. |
| 3. | Informal. a duplicate; copy. |
| 4. | as already stated; likewise. |
| 5. | to make a copy of, using a Ditto machine. |
| 6. | to duplicate or repeat the action or statement of (another person). |