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(trans'shĕnt, -sē-ĕnt),
1. Short-lived; passing; not permanent; said of a disease or an attack.
2. A short-lived cardiac sound having little duration (less than 0.12 seconds) as distinct from a murmur; for example, first, second, third, and fourth heart sounds, clicks, and opening snaps.
[L. transeo, pres. p. transiens, to cross over]


[tran′shənt, tran′zē·ənt]
Etymology: L, transire, to go through
pertaining to a condition that is temporary, such as transient ischemic attack.


Sleep disorders The perceived or actual inability to sleep one's usual amount of time; a condition characterized by any combination of difficulty with falling asleep, staying asleep, intermittent wakefulness, and early-morning awakening; episodes may be transient, short-term–lasting 2 to 3 wks, or chronic Triggers Illness, depression, anxiety, stress, poor sleep environment, caffeine, abuse of alcohol, heavy smoking, physical discomfort, daytime napping, medical conditions, poor sleep habits–eg, early bedtime, excessive time awake in bed Examples Psychophysiologic–learned insomnia, delayed sleep phase syndrome, hypnotic dependent sleep disorder, stimulant dependent sleep disorder. See Circadian rhythm, Conditioned insomnia, Familial fatal insomnia, Jet lag, Pseudoinsomnia, Rebound insomnia, REM sleep, Sleep disorder, Sleep-onset insomnia.
Chronologic classification
• Transient–eg, 'jet lag'; does not require treatment
• Short term < 3 weeks in duration, due to travel to high altitudes, grieving loss of loved one, hospitalization, pain
• Long term > 3 weeks in duration, eg related to medical, neurologic or psychiatric disorders or addiction
• Pharmacologic Due to coffee, nicotine, alcohol
• Rebound (withdrawal) Related to abrupt discontinuation of hypnotic drugs
• Delayed sleep phase Due to shift work, chronic pain, sleep apnea and restless leg syndrome


Baldness Dermatology
1. Loss or absence of hair on the scalp.
2. Baldness, see there See Hair replacement, Hot comb alopecia, Moth-eaten alopecia.
Alopecia types
Male pattern
On the front and top–blame mother
Alopecia areata–blame mother, angry lover
Related to RT–blame radiation oncologist
Alopecia capitis totalis–blame mother
Due to chemotherapy—cyclophosphamide, cytosine arabinoside, doxorubicin–blame oncologist


1. Short-lived; not permanent.
2. A short-lived cardiac sound of short duration as distinct from a murmur.
[L. transeo, pres. p. transiens, to cross over]


(trans'shĕnt, -sē-ĕnt)
Short-lived; passing; not permanent.
[L. transeo, pres. p. transiens, to cross over]

transient (tran´zēənt),

adj pertaining to a condition that is temporary or of short duration, usually not recurring.
References in periodicals archive ?
As explained above, a transient failure depends on the rare concurrence of the transients and the susceptibility windows, so over a short period of time failures associated with transients may not develop (another possible reason is long error latency).
The positions of the burst, the transient, and the quasar are similar, but their precise locations are uncertain enough to allow the possibility of no relation at all.
In many applications, the peak voltage of the transient waveform is not as important as the energy distribution of the transients in the frequency domain.
com/research/16bc2a/world_transient_vo) has announced the addition of Frost & Sullivan's new report "World Transient Voltage Surge Suppressor Markets" to their offering.
Those who are even luckier than Walker are people like Tyrone Taylor, 57, who have moved from temporary shelters to the newly opened 87-unit Rainbow Apartments, aimed at housing transients who have kicked past addictions.
Martzloff, who has been chasing transients for about 25 years, recently helped form a consortium of companies and organizations interested in working with NBS to identify effective ways of defending building wiring systems, communications networks and electronic equipment against electrical disturbances.
The newer microprocessors offer greater and faster processing capabilities in smaller packages, but existing microprocessor-based devices cannot handle surges and transients well due to their smaller size.
In all, some 3,600 transients are packed into the few square blocks east of downtown known as Skid Row.
Police can remove transients sleeping on the sidewalks in other areas of the city.
The American Civil Liberties Union filed the challenge in 2003 on behalf of six transients who were unable to get shelter the night they were cited or arrested.
Transient voltage surge suppressors (TVSSs), also known as surge protection devices (SPDs), can be installed to filter out "transients," which are short-term deviations from normal voltage levels.