From Wiktionary, the free dictionary

• micro-processor

From micro- +‎ processor.

microprocessor (plural microprocessors)

1. (computer hardware) The entire CPU of a computer on a single integrated circuit (chip).

   • 1992, Michael A. Miller, The 68000 Microprocessor Family: Architecture, Programming, and Applications, page 47:

     When the microprocessor decodes the JSR opcode, it stores the operand into the TEMP register and pushes the current contents of the PC ($00 0128) onto the stack.

   • 2007, Uwe Meyer-Baese, “Microprocessor Design”, in Digital Signal Processing with Field Programmable Gate Arrays, 3rd edition, Berlin: Springer Science+Business Media, →ISBN, page 537:

     When you think of current microprocessors (μPs), the Intel Itanium processor with 592 million transistors may come to mind. […] Clearly today's FPGAs will not be able to implement such a top-of-the-range μP with a single FPGA.

• nanoprocessor

• integrated circuit
• microchip