noun

• (psychology) A strategy for making more efficient use of short-term memory by recoding information.
  "Chunking is the reason that phone numbers are broken into two parts plus an area code and that credit card numbers are split into groups of four."
• (writing) A method of presenting information which splits concepts into small pieces or "chunks" of information to make reading and understanding faster and easier, using such methods as bulleted lists, short subheadings, or short sentences with one or two ideas per sentence.
• (computing) The division of memory or data etc. into smaller units for easier processing.
• (mathematics, education) The partial-quotients method for solving simple division problems by repeated subtraction.