A flat is an apartment or small home that does not have any stairs. It is flat, that is, all on one level.     Flet     From the Scottish word flet, meaniâ¦ng the inner part of a house.
Bradycardia in an adult is any heart rate less than 60 beats per minute (BPM), although symptoms usually manifest only for heart rates less than 50. The word bradycardia is from the Greek Î²ÏÎ±Î´ÏÏ, bradys slow, and ÎºÎ±ÏÎ´Î¯Î±, kardia, heart.
A heart rate that's too slow is called bradycardia. What's too slow depends on a person's age and activity. A newborn usually won't have a heart rate of less than 80 beats a minute. An athletically trained teenager may have a normal resting heart rate of 50 beats a minute.