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.
Confidence votes 297. MB, KB and GB are all shortened names measuring the amount of memory or disk space that is used by a computer. KB stands for kilobyte, which is 1000 bytes. MB stands for megabyte, which is 1000 kilobytes. GB stands for gigabtye, which is 1000 megabytes. It should be noted that computer operating systems and computer hardware manufacturers measure these sizes differently.