a test for fetal well-being in which an acoustic device is used to stimulate the fetus and accelerate its fetal heart rate.
a·cou·stic stim·u·la·tion test
(ă-kūs'tik stim'yū-lā'shŭn test) A test for fetal well-being through use of an acoustic device to stimulate the fetus and cause acceleration of fetal heart rate.