The term BYTE PART is composed of six crossword solutions: BIT (3 letters), BITS (4 letters), MEGA (4 letters), GIGA (4 letters), KILO (4 letters), and TERA (4 letters). BIT stands for binary digit, which is the smallest unit of data in computing. BITS is the plural form of BIT and is used to measure data transfer speeds. MEGA, GIGA, KILO, and TERA are all prefixes used to denote a multiple of bytes. MEGA stands for one million bytes, GIGA stands for one billion bytes, KILO stands for one thousand bytes, and TERA stands for one trillion bytes.