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.
A 1-KB file is composed of 1,000 bytes of data, a 1-MB file is composed of 1 million bytes of data and a 1-GB file is composed of 1 billion bytes of data. KB stands for kilobytes, MB stands for megabytes and GB stands for gigabytes, as kilo, mega and giga are metric system prefixes for thousand, million and billion. The abbreviation for byte is B..