被験ひけんしゃ
hikensha

Noun

1. subject (of a medical experiment, etc.); test subject; trial subject; testee

その実験じっけん結果けっかをコントロールするのは被験ひけんしゃ態度たいどである。
sono jikkenno kekkao kontorōru suru nowa hikenshano taidodearu.
It is the attitude of the subjects that controls the outcome of the experiment.
Noun

2. examinee (of a full-body scan, etc.)

Other forms: