ejection


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e·jec·tion

(ē-jek'shŭn),
1. The act of driving or throwing out by physical force from within.
2. That which is ejected. Synonym(s): ejecta
[L. ejectio, from ejicio, to cast out]

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.

ejection

[ijek′shən]
Etymology: L, ejicere, to cast out
forceful expulsion, as of blood from a ventricle of the heart.

ejection

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

e·jec·tion

(ē-jek'shŭn)
1. The act of driving or throwing out by physical force from within.
2. That which is ejected.
Synonym(s): ejecta.
[L. ejectio, from ejicio, to cast out]

e·jec·tion

(ē-jek'shŭn)
1. Driving or throwing out by physical force from within.
2. That which is ejected.
[L. ejectio, from ejicio, to cast out]

ejection

forcible expulsion through a narrow orifice.

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.
References in periodicals archive ?
Stroke volume, at times, may increase normally during upright exercise, despite a decrease in left ventricular ejection fraction.
The condition is assessed by measuring ejection fraction, which represents the fraction of blood pumped out of a heart's ventricles each time it contracts.
This study has clearly demonstrated that survival is better for women with heart failure than for men, irrespective of ejection fraction, age or other variables," Manuel Martinez-Selles, first author of the study from the Gregorio Maranon University Hospital in Madrid, said.
Thus, vireos used only visual cues for egg discrimination in eight ejections, whereas in one ejection both visual and tactile cues were available for egg discrimination.
The analysis also uncovered a treatment paradox: the lower a patient's ejection fraction, the lower the likelihood of statin treatment.
According to Bob Sadler, Chief Engineer for Goodrich's Ejection Seat Systems team, "Each time we meet or hear from an ejection survivor, our passion for this business increases.
They show a coronal mass ejection that is shaped like a crescent moon as is lifts off the sun.
Rotating mold table allows simultaneous injection and ejection.
If such trials prove that T-wave alternans and other new measures can supplement ejection fraction in clinical evaluation of patients, doctors may save more lives even though they implant fewer devices than they do now.
The pilot initiated his own ejection on the second attempt at an altitude of less than 3,000 feet.
In an injection mold, the ejection system must operate in a way that provides a balanced operation without damaging the molding or the ejector components.
In "Dog Sleds and Cold Beds" [September 2004, Notebook], the writer says, "When the editor was looking for a volunteer to shoot a feature story in Alaska, my hand shot up quicker than an ejection seat busting an F-16 canopy.