How to say "fragmentation" in Japanese

• フラグメンテーション
  nounKatakana loanword for 'fragmentation', used especially as a technical term in computing, as in memory or disk fragmentation. Less common than the native equivalent in everyday contexts.
• 断片化だんぺんか
  nounThe standard native term for the literal and technical sense of something breaking or being split into fragments, such as data, markets, or society. This is usually the word you want for 'fragmentation'.
• 細分化さいぶんか
  noun, suru verbCovers subdivision or segmentation: dividing a whole into smaller, finer units, as with tasks or market segments. For the sense of breaking into pieces, this is a marginal match rather than the natural choice.

For the literal or technical sense of breaking into pieces, 断片化 is the usual choice; 細分化 covers subdividing into smaller units, and 「フラグメンテーション」 is the loanword, chiefly in computing contexts.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• フラグメンテーションfragmentation
• 断片化だんぺんかfragmentation
• 細分化さいぶんかsubdivision