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.
Report Abuse. MB means megabytes. KB means kilobytes. 1,000 KB equals to 1 MB. KB has a smaller value than MB and GB (gigabytes} has a bigger value than MB. Example, when you download a Video file, it will tell you whether its in KB or MB.eport Abuse. MB means megabytes. KB means kilobytes. 1,000 KB equals to 1 MB. KB has a smaller value than MB and GB (gigabytes} has a bigger value than MB. Example, when you download a Video file, it will tell you whether its in KB or MB.