heartbeat

(from the article `heart`) The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are ... The vertebrate heart is myogenic (rhythmic contractions are an intrinsic property of the cardiac muscle cells themselves). Pulse rate varies widely ... Closure of t...
Found on http://www.britannica.com/eb/a-z/h/28

heartbeat

(hahrt´bēt) the cycle of contraction of the heart muscle; it begins with an electrical impulse in the sinoatrial node, which serves as the normal pacemaker for the heart.
Found on http://www.encyclo.co.uk/local/21001

heartbeat

noun an animating or vital unifying force; `New York is the commercial heartbeat of America`
Found on https://www.encyclo.co.uk/local/20974

Heartbeat

[Buddy Holly song] `Heartbeat` is a rockabilly song credited to Bob Montgomery and Norman Petty and recorded originally by Buddy Holly in 1958. The B-side of the single was `Well... All Right` (Buddy Holly, Norman Petty, Jerry Allison, Joe Mauldin). ==Hit versions== The last Buddy Holly single to be released during his lifetime, `Heartbeat`...
Found on http://en.wikipedia.org/wiki/Heartbeat_(Buddy_Holly_song)

Heartbeat

[Can-linn song] ==Chart performance== ...
Found on http://en.wikipedia.org/wiki/Heartbeat_(Can-linn_song)

Heartbeat

[computing] In computer science, a heartbeat is a periodic signal generated by hardware or software to indicate normal operation or to synchronize other parts of a system. Usually a heartbeat is sent between machines at a regular interval on the order of seconds. If a heartbeat isn`t received for a time—usually a few heartbeat intervals...
Found on http://en.wikipedia.org/wiki/Heartbeat_(computing)

Heartbeat

[Don Johnson song] Heartbeat is a 1986 song by Don Johnson. It was released as a single and included on the album of the same name. It became an international hit, peaking at #5 on the Billboard Hot 100, and charting highly in many European countries. It was also ranked at #90 on the list of the 100 Worst Songs Ever by Matthew Wilkening of ...
Found on http://en.wikipedia.org/wiki/Heartbeat_(Don_Johnson_song)

Heartbeat

[The Fray song] `Heartbeat` is the first single from The Fray`s third album Scars & Stories. The band premiered the song while opening for U2 on their U2 360° Tour in May 2011. The song was released for airplay on October 8, 2011, and was released for download in the United States on iTunes on October 11, 2011. ==Meaning== Isaac Slade ment...
Found on http://en.wikipedia.org/wiki/Heartbeat_(The_Fray_song)

heartbeat

Type: Term Pronunciation: hart′bēt Definitions: 1. A single complete cycle of contraction and dilation of heart muscle.
Found on http://www.medilexicon.com/medicaldictionary.php?t=39552
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