(a.) Beginning and ending in a day; existing only, or no longer than, a day; diurnal; as, an ephemeral flower.
(a.) Short-lived; existing or continuing for a short time only.
(n.) Anything lasting but a day, or a brief time; an ephemeral plant, insect, etc.
Example Sentences:
(1) Absent English-language material tends to be ephemeral or otherwise out of scope for the resource libraries.
(2) "We've seen evidence ourselves that the use case of ephemeral messaging is very powerful."
(3) The isolates have been typed as 27 separate viruses belonging to the bluetongue, epizootic haemorrhagic disease, Palyam, Simbu, bovine ephemeral fever, Tibrogargan and alphavirus groups.
(4) When mice were treated with P90 before being primed with sheep erythrocytes, polyclonal immunoglobulin synthesis was accompanied by an ephemeral stimulation of the specific immune response against sheep erythrocytes that was quickly replaced by a dramatic immunosuppression.
(5) The short course of respiratory failure suggests that toxin effect is unusually ephemeral with a mean intubation interval of only 8.6 days.
(6) The remark evoked a defensive response from those wedded to the ephemeral virtues of the "confidence fairy" – and who are concerned to keep her benevolent figure hovering above Britain's severely weakened economy.
(7) These sera were tested for antibodies against foot-and-mouth disease, bovine herpes virus types 1 and 2, lumpy skin disease, bovine viral diarrhoea, Akabane, bovine ephemeral fever, bluetongue, enzootic bovine leucosis, African horse sickness and African swine fever viruses and Brucella abortus based on the expected species susceptibility.
(8) The effects of abiotic and biotic mortality factors on preimaginal survivorship and the production of adults were investigated for populations of Culex tarsalis Coquillett at a stable foothill breeding site during 1985 and at seven ephemeral breeding sites during 1986.
(9) Before the silicon chip was invented, pen and paper, the printing press and the camera all helped store information for us, ephemerally or for posterity.
(10) Five cattle infected with bovine ephemeral fever virus were necropsied on the day after onset of clinical disease, when clinical signs of lameness were most severe.
(11) Determining heritability not only in nature but in relation to subdivision into ephemeral patches (cladodes in this case) has an important bearing on natural selection response and to general theories of stabilizing selection proposed to explain the existence of genetic variation.
(12) The duration of detectable neutralizing antibody in these birds was found to be ephemeral in some species (e.g., black-capped chickadees) and extremely longlasting in others (e.g., gray catbirds, swamp sparrows).
(13) Bovine ephemeral fever (BEF) virus vaccines, prepared from the brains of suckling mice infected with strain 525 BEF virus, were evaluated in housed cattle and in the field.
(14) Clinical signs of ephemeral fever occurred in four untreated cattle infected at the same time.
(15) Follies plays exquisitely on the unreliability of memory and the ephemerality of theatre; it is a stark warning against the distorting dangers of nostalgia.
(16) Similar sheets of cells were obtained from the cases of SSPE but the only nodules formed were smaller and ephemeral.
(17) In fact, it's getting into longer narratives through a feature called Snapchat Stories, which launched in October as a "fun and ephemeral" way to "share your day with friends – or everyone".
(18) Three adult cattle that had been ataxic for 5 to 7 months and a bull that had been paralysed for 24 days following bovine ephemeral fever infection were studied clinically and pathologically.
(19) Three newborn calves were inoculated intracerebrally with bovine ephemeral fever virus strain 525.
(20) Ten isolations of bovine ephemeral fever virus were made in Aedes albopictus tissue cultures from the blood of 5 clinical cases.
Transient
Definition:
(a.) Passing before the sight or perception, or, as it were, moving over or across a space or scene viewed, and then disappearing; hence, of short duration; not permanent; not lasting or durable; not stationary; passing; fleeting; brief; transitory; as, transient pleasure.
(a.) Hasty; momentary; imperfect; brief; as, a transient view of a landscape.
(a.) Staying for a short time; not regular or permanent; as, a transient guest; transient boarders.
(n.) That which remains but for a brief time.
Example Sentences:
(1) The major treatable risk factors in thromboembolic stroke are hypertension and transient ischemic attacks (TIA).
(2) Here we show that this induction of AP-2 mRNA is at the level of transcription and is transient, reaching a peak 48-72 hr after the addition of RA and declining thereafter, even in the continuous presence of RA.
(3) Determination of plasma luteinizing hormone (LH) levels in the peripubertal female rats revealed that plasma LH was increased transiently immediately after NPY administration.
(4) An axillo-axillary bypass procedure was performed in a high-risk patient with innominate arterial stenosis who had repeated episodes of transient cerebral ischemia due to decreased blood flow through the right carotid artery and reversal of blood flow through the right vertebral artery.
(5) With prolonged ischemia, it is only transient and is followed by a gradual loss of the adenylyl cyclase activity.
(6) Definitive neurological deficits occurred in 0.09%, transient deficits were observed in 0.45%.
(7) Nevertheless, this LTR does not govern efficient transcription of adjacent genes in a transient expression assay.
(8) This transient paresis was accompanied by a dramatic fall in the MFCV concomitant with a shift of the power spectrum to the lower frequencies.
(9) In some animals, the response was marked vasodilation, whereas in others transient vasoconstriction preceded the vasodilation.
(10) We investigated the possible contribution made by oropharyngeal microfloral fermentation of ingested carbohydrate to the generation of the early, transient exhaled breath hydrogen rise seen after carbohydrate ingestion.
(11) Protein kinase C (PKC) is activated rapidly and transiently following ionizing radiation exposure and is postulated to activate downstream nuclear signal transducers.
(12) To study these changes more thoroughly, specific monoclonal antibodies of the A and B subunits of calcineurin (protein phosphatase 2B) were raised, and regional alterations in the immunoreactivity of calcineurin in the rat hippocampus were investigated after a transient forebrain ischemic insult causing selective and delayed hippocampal CA1 pyramidal cell damage.
(13) Transient intermediates were distinguished from dead-end metabolites by the rapid formation and disappearance of the former.
(14) Distant ischemia was distinguished from peri-infarctional ischemia by the presence of transient thallium defects in, or slow thallium washout from myocardium not supplied by the infarct-related coronary artery.
(15) A23187 had only a transient effect on KCl-contracted coronary arteries.
(16) Transient thyroid dysfunction occurred in 35 (46%) of 76 patients who were initially euthyroid.
(17) An electrogenic sodium-potassium pump appears to contribute materially to the steady-state potential and to certain of the transient potential responses of vascular smooth muscle.
(18) Initial exposure of cells to low concentrations of either H2O2 or xanthine oxidase resulted in a transient increase in membrane potential relative to control cells (P less than 0.001), followed by an exponential decline in potential (P less than 0.001).
(19) The early absolute but transient dependence of these A-MuLV mast cell transformants on a fibroblast feeder suggests a multistep process in their evolution, in which the acquisition of autonomy from factors of mesenchymal cell origin may play an important role.
(20) Diabetic retinopathy (an index of microangiopathy) and absence of peripheral pulses, amputation, or history of myocardial infarction, stroke, or transient ischemic attacks (as evidence of macroangiopathy) caused surprisingly little increase in relative risk for cardiovascular death.