#asunet

• Anechoic — Pertaining to anatomical structures, tissues, cysts, or tumor masses that produce no echoes during ultrasound examination, appearing completely black on the screen; anechoic or echo-free. This structural physical trait indicates a purely fluid-filled mass.
• Harmonic overtone — A secondary sound, an echo, or a harmonic resonance that accompanies a primary noise; an acoustic or semantic vibration that perfectly consounds with a reference element. In a structural sense, it defines the sonic component resulting from the process of resonance.
• Wailing — The act of wailing and its result; noisy weeping, lamentation with a loud voice, or repeated whimpering. In an archaic or instrumental sense, the term also describes the action of an ancient musical instrument (such as a trumpet or tympanum) to resound, ring loudly, or strike making a rhythmic noise, or the irregular beating of the heart in regional idioms.