Translation guide
A pleopod is a swimming leg or appendage of a crustacean, used for swimming, brooding eggs, or creating water currents. In Japanese, this is a technical term with a direct equivalent.
The learner wants to refer to the anatomical structure of a crustacean's pleopod.
The standard Japanese term for pleopod, used in biological and zoological contexts. Literally 'abdominal limb'.
エビの腹肢は遊泳に使われる。
The shrimp's pleopods are used for swimming.
Literally 'swimming leg', this term emphasizes the function of the pleopod. Used in some scientific descriptions.
この甲殻類の遊泳脚はよく発達している。
The swimming legs of this crustacean are well-developed.
Another term for pleopod, literally 'abdominal leg'. Less common than 腹肢.
腹脚は甲殻類の腹部にある付属肢である。
Pleopods are appendages on the abdomen of crustaceans.
In everyday conversation, Japanese speakers might simply say 足 (あし, leg) or 遊泳用の足 (ゆうえいようのあし, leg for swimming) instead of the technical term. Use 腹肢 only in scientific or academic contexts.