ZWITTERION

- A molecule carrying both a positive and a negative charge.

Z10 - W4 - I1 - T1 - T1 - E1 - R1 - I1 - O1 - N1 has 22 points in Scrabble!

Z10 - W4 - I1 - T1 - T1 - E1 - R1 - I1 - O1 - N2 has 23 points in Words with Friends!

Found in the OTCWL2014, SOWPODS, ENABLE, and WWF dictionaries