ejection (redirected from eject)

ejection /ejec·tion/ (e-jek´shun)

1. the act of casting out or the state of being cast out, as of excretions, secretions, or other bodily fluids.

2. something cast out.

3. the discharge of blood from the heart; see under period.

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e·jec·tion (-jkshn)

n.

1. The act of driving or casting out by physical force from within.

2. See ejecta.

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ejection

[ijek′shən]

Etymology: L, ejicere, to cast out

forceful expulsion, as of blood from a ventricle of the heart.

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ejection

forcible expulsion through a narrow orifice.

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ejection fraction

of the cardiac stroke volume equals the ratio of the stroke volume to the end-diastolic volume.

milk ejection

see letdown.

ventricular ejection time

that part of the cardiac ventricular contraction time when blood is actually discharged through the semilunar valves.

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ejection

Cardiology See Ejection fraction, Ejection murmur Emergency medicine The throwing of a person from a vehicle.