How to say "transplantation" in Japanese

• 植え替えうえかえ
  nounCovers transplanting plants—moving a growing plant to new soil or a new pot. It is the less common of the two and is not used for medical transplantation, so it seldom translates 'transplantation' in medical contexts.
• 移植いしょくCommon
  noun, suru verb, transitive verbThe common word for transplantation of an organ, tissue, or the like, as in medical settings such as heart or kidney transplants. When 'transplantation' refers to surgery or medicine, this is the word you want.

For medical transplantation of organs or tissue use 移植, the common everyday word; 「植え替え」 refers only to transplanting plants and is less common, so it rarely matches 'transplantation' in other senses.

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

• 植え替えうえかえtransplantation (of plants)
• 移植手術いしょくしゅじゅつtransplant surgery
• 移植いしょくtransplantation (of an organ, tissue, etc.)