Definition of "megabit"

megabit

/ˈmɛɡəbɪt/

noun
plural megabits
1. (computing) One million (106, or 1,000,000) bits or 1,000 kilobits. Equals 125,000 bytes (125 kilobytes).
  Quotations
  When reading clock pulses only, the signal frequency is 625 kHz. The bit rate, however, is twice the signal frequency, or 1.25 megabits/sec.
  1965, Field Engineering Theory of Operation 2311 Disk Storage Drive, IBM, pages 3–27
2. (computing) a mebibit.
3. (computing, informal) one megabit per second