crystalize or crystaliseverb

• sumach
• Sumatran
• Sumerian
• summa cum laude
• summarize
• summary
• summary jurisdiction
• summary offence
• summat
• summation
• summer
• summerhouse
• summer pudding
• summersault
• summer school
• Summer Time
• summertime
• summer-weight
• summery
• summing-up
• summit
• summiteer
• summon
• summons
• summum bonum