Fissure: A cleft or groove. A fissure can be normal or abnormal. A fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is abnormal. It is a painful crack in the edge of the anus and is very painful.Also called an anal fissure or fissure in ano. fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is abnormal. It is a painful crack in the edge of the anus and is very painful.
Report Abuse. A GigaByte (GB) is usually referred to for space on a Hard Drive or RAM in a computer. 1 GB = 1024 MB Typical Song that can be downloaded to a computer that is 3 minutes in length is usually about 4MB.
âºâº Definition: Megabyte. A megabyte is a unit of information or computer storage equal to 1,048,576 bytes. The official SI definition uses the mebibyte or MiB unit to represent 2 20 bytes.However, most people have requested the more common usage, so the non-SI version is used on this site.he main non-SI unit for computer data storage is the byte. 1 byte is equal to 9.53674316406E-7 MB, or 9.31322574615E-10 GB. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between megabytes and gigabytes.