There are 16 words that start with 'acidi'.
| acidic | acidify |
| acidity | acidified |
| acidifier | acidifies |
| acidities | acidifiers |
| acidifying | acidimeter |
| acidimetry | acidimeters |
| acidimetric | acidimetries |
| acidification | acidifications |
Note: These 16 words that start with 'acidi' are found from the USA & Canada version of the tournament Scrabble word list.