a pulsation of the , including one complete systole and diastole.
one complete pulsation of the heart See diastole, systole
1850, from heart + beat (n.). From the beginning used as a figure for “a very brief time.”
heartbeat heart·beat (härt’bēt’)
A single complete pulsation of the heart.
1. The signal emitted by a Level 2 Ethernet transceiver at the end of every packet to show that the collision-detection circuit is still connected.
2. A periodic synchronisation signal used by software or hardware, such as a bus clock or a periodic interrupt.
3. The “natural” oscillation frequency of a computer’s clock crystal, before frequency division down to the machine’s clock rate.
4. A signal emitted at regular intervals by software to demonstrate that it is still alive. Sometimes hardware is designed to reboot the machine if it stops hearing a heartbeat. See also breath-of-life packet, watchdog.
noun 1. . noun 1. a chair back having a form resembling that of a somewhat heart-shaped medieval shield.
noun, Pathology. 1. damage to an area of heart muscle that is deprived of oxygen, usually due to blockage of a diseased coronary artery, typically accompanied by chest pain radiating down one or both arms, the severity of the attack varying with the extent and location of the damage; myocardial infarction. noun 1. any sudden […]
/ˈhiːθˌfaʊl/ noun 1. (in British game laws) an archaic name for the black grouse Compare moorfowl
noun 1. a European grass, Sieglingia decumbens, growing in spongy, wet, cold soils. noun 1. a perennial European grass, Danthonia decumbens, with flat hairless leaves