1. versatile; having the ability to change and adapt in many ways
1. She's a genius, wth a protean mind that can adapt to any situation and find inspiration in any challenge.
2. taking many different forms
2. Depression is a protean condition, whose forms are as different as the personalities of its victims.
Proteus (a sea god who could change his form) (Greek)
'protean' sounds like protein as someone above had already said and we all have learnt in organic chemistry that this protein "can take many forms". If you eat proteins rather than carbohydrates, you will be strong and flexible (versatile) rather than fat. imagine the proteas (SAF cricket team as they are called). They are so flexible