1. Not finally or definitely formed
   "uncrystallised ideas"
   - uncrystallized 
2. Without real or apparent crystalline form
   - amorphous, uncrystallized

See also: noncrystalline

• one-sixty-fourth
• one-size-fits-all
• one-spot
• one-step
• one-ten-thousandth
• one-tenth
• one-third
• one-thirty-second
• one-thousandth
• one-to-one
• one-track
• one-track mind
• one-trillionth
• one-twelfth
• one-two
• one-upmanship
• one-way
• one-way light time
• one-way street
• one-winged
• one-woman
• one-year
• one-year-old
• Onega
• Oneida