Ringing in the Ears
This page is the CodyCross answer for the clue below from Science Lab, Group 316, Puzzle 5 (Wave Function).
Question is: Ringing in the Ears
and the answer is: TINNITUS
Word Meaning:
TINNITUS — (otolaryngology, pathology) The experience of auditory sensations, such as a ringing or pulsating sound, occurring in the absence of any external stimulus.
Definitions from Wiktionary.