After researching various ways to try and explore the word 'dissolve' I came up with some general ideas to try and make visual. I thought some of these worked really well at portraying the word dissolved but found it quite hard to imitate by hand:
I thought the idea of having a letter and the top half of it gradually breaking away, disintegrating would display dissolve quite well, that would be the most obvious approach. I also think having the letter drawn and then running its ink could suggest 'dissolve' in a less obvious way. Another idea was to have the letter cracked into smaller pieces as though it had just been hit and crumbled seperating in different directions.