A Heart Monitor's Depiction of No Heartbeat
This page is the CodyCross answer for the clue below from Welcome to Japan, Group 566, Puzzle 2 (Tanegashima Space Center).
Question is: A Heart Monitor's Depiction of No Heartbeat
and the answer is: FLATLINE
Word Meaning:
FLATLINE — (medicine, cardiology) An asystole; the absence of heart contractions or brain waves.
Definitions from Wiktionary.