tropism /trōˈpi-zm/ (biology)

1. Orientation in response to stimulus
2. A general term for heliotropism, geotropism, etc

• crumb-trays
• crumby
• crumen
• crumenal
• crumenals
• crumens
• crumhorn
• crumhorns
• crummack
• crummacks
• crummier
• crummies
• crummiest
• crumminess
• crummock
• crummocks
• crummy
• crump
• crumped
• crumper
• crumpest
• crumpet
• crumpets
• crumpier
• crumpiest