hourglass murmur
n.
A murmur in which there are two areas of maximum loudness, one preceding and the other following a softer midpoint. Its graph resembles an hourglass.
Words nearby hourglass murmur
hour angle,
hour circle,
hour hand,
hourglass,
hourglass contraction,
hourglass murmur,
hourglass stomach,
houri,
hourlong,
hourly,
hours