What is a Qubit? You've learned about binary digits in this chapter; now learn about the Qubit, the basic unit of information in a quantum computer. Beware: When you step into the realm of quantum theory, things become bizarre.
https://whatis.techtarget.com/
wsearchResults/1,290214,sid9,00.html?query qubit#
www.thefreedictionary.com/quantum+bit
www.qubit.org/
www.answers.com/topic/qubit?method 6
www.worldwidewords.org/turnsofphrase/tp-qub1.htm