There is no widely accepted term for fractional binary numbers like 0.11001. A fractional decimal number like 0.427 is called a decimal or decimal fraction. A fractional binary number is called many things, including binary fraction, binary decimal, binary expansion, bicimal, binimal, binary radix fraction, and binary fractional (my term). In this article, I’m going to argue that bicimal should be the universal term.
(Please let me know what you think — take the poll at the end of this article.)