Wiktionary (0.00 / 0 votes) Rate this definition: ignorant (Adjective). Unknowledgeable or uneducated; characterized by ignorance. ignorant (Adjective). Ill-mannered, crude. His manner was at best off-hand, at worst totally ignorant.
1 Megabyte (MB), a measure of amount of information used, for example, to quantify computer memory or storage capacity. 2  Megabit (Mb, or properly: Mbit), a measure of amount of information.  MikroBitti (formerly MB), a Finnish computer magazine.
Megabytes (MB) and gigabytes (MB) refer to units of measurement indicating how much data a digital storage device can hold, where one gigabyte equals 1,024 megabytes. A megabyte is approximately one million bytes, whereas a gigabyte is about one billion bytes.