There are 12 words that start with 'aldo'.
| aldol | aldols |
| aldose | aldoses |
| aldolase | aldolases |
| aldosterone | aldolization |
| aldosterones | aldolizations |
| aldosteronism | aldosteronisms |
Note: These 12 words that start with 'aldo' are found from the USA & Canada version of the tournament Scrabble word list.