How to say "compressor" in Japanese

• コンプレッサーCommon
  nounThe common word for a compressor: a machine that compresses air or gas, from workshop air compressors to the compressor units in refrigerators and air conditioners. A safe default in most contexts.
• 圧搾機あっさくき
  nounGlossed 'compressor', but really a press: a machine that squeezes things under pressure, typically to extract oil or juice. Seldom the word you want for a compressor; コンプレッサー or 圧縮機 is what you need.
• 圧縮機あっしゅくき
  nounA compressor in the technical sense: a machine that compresses air or gas. The word you meet in engineering and industrial contexts; コンプレッサー is the more common everyday equivalent.

For machines that compress air or gas, 「コンプレッサー」 is the common everyday word and 圧縮機 the technical one; 圧搾機 is really a press that squeezes out liquid, so it seldom means 'compressor'.

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

• コンプレッサーcompressor
• 圧搾機あっさくきcompressor
• 圧縮機あっしゅくきcompressor