Seeeeeed. (it's cheesier to hold the 'e' as long as possible)

Thinking about SeeD and the capital 'D' at the end, maybe it's an acronym... each letter stands for something, and the D refers to a persons' name or a place... not put any thought into this yet- may boot up FF8 (yes I still say 'boot up') and do a little research...

On second thoughts maybe it was designed so that people would think it's a acronym and spend ages trying to work out what to no avail, going in endless circles, and they're there- in the Square offices- laughing...