(a.) ing or continuing through the year; as, perennial fountains.
(a.) Continuing without cessation or intermission; perpetual; unceasing; never failing.
(a.) Continuing more than two years; as, a perennial steam, or root, or plant.
(n.) A perennial plant; a plant which lives or continues more than two years, whether it retains its leaves in winter or not.
Example Sentences:
(1) Eighty micrograms of the topically active parasympatholytic drug ipratropium were applied intranasally four times daily in 20 adults with perennial rhinitis and severe watery rhinorrhoea in a double-blind controlled cross-over trial.
(2) consider the X-ray findings verified in 3 groups of subjects: with Hayfiber, with perennial rhinitis and the last one being a control group.
(3) Eleven children with severe perennial asthma and a poor clinical response to disodium cromoglycate were studied in a 4-month, double blind trial involving 1 month's treatment with placebo, disodium cromoglycate, betamethasone 17 valerate, and both drugs combined according to a predetermined random design.
(4) Cruden Farm, Victoria The 54-hectare Murdoch family estate in Langwarrin south of Melbourne, Australia, features magnificent gardens complete with ponds, lemon-scented gum trees and two walled gardens and perennial borders.
(5) In this study, the authors evaluate the inhalant substances of the house, emphasizing the importance of Dermatophagoides pteronyssinus to cause perennial allergic rhinitis.
(6) A panel of human CD4+ T cell clones specific for the house dust mite was isolated from an atopic individual with perennial rhinitis.
(7) Patients who had both perennial symptoms and summer seasonal exacerbations had a higher incidence of a positive family history of atopy and developed symptoms earlier in life than those patients who had summer seasonal or perennial symptoms only.
(8) Patients with perennial rhinitis had a more vigorous response than the controls.
(9) The immediate changes in regional ventilation and pulmonary blood flow were studied in seventeen adults with perennial asthma and in two control persons, who were challenged by histamine inhalation (histamine induced asthma (HIA)).
(10) Twenty-eight patients with allergic perennial rhinitis treated for 2 years with parenteral semidepot immunotherapy were divided into two groups of 14 patients: group A receiving conventional aerosol nebulization (TNE), and group B, which received TNAI using a type F aerosol electrocompressor.
(11) We have something to say and something to offer on perennial political dilemmas.
(12) Specificity was 87% for pollens and 90% for perennial antigens.
(13) Overnight, Russia has moved from perennial rival to trusted friend, while Nato’s future is in peril.
(14) More males than females had summer seasonal symptoms whereas more females than males had perennial symptoms.
(15) The old-fashioned dining room, unpretentious atmosphere, and the three-course menus under €30 make it a perennial favourite.
(16) But Howitt says that while it is a problem that so much farmland has shifted from more adjustable crops to perennials like almonds, he has a simpler solution: better management of groundwater.
(17) They are the identification of factors causing severe disease as opposed to heavy infection; the effects of seasonal as opposed to perennial transmission; and the importance of transplacental transmission of microfilariae or soluble antigens.
(18) Together with his late wife Janet, he wrote 37 titles including perennial favourites The Jolly Postman and Burglar Bill, and by himself he is the author of many more, including The Pencil, and Woof!
(19) It seems that perennial rhinitis probably arises from abundance of domestic antigens more than for the other allergic manifestations, as the nose is the first filter to receive foreign particles.
(20) However, PAC differed from SAC in several respects: a history of exacerbation on exposure to house dust (PAC 42 per cent; SAC none) and an association with perennial rhinitis (PAC 75 per cent; SAC 12 per cent) were more common in PAC.
Perpetual
Definition:
(a.) Neverceasing; continuing forever or for an unlimited time; unfailing; everlasting; continuous.
Example Sentences:
(1) If there is a will to use primary Care centres for effective preventive action in the population as a whole, motivation of the professionals involved and organisational changes will be necessary so as not to perpetuate the law of inverse care.
(2) We speculate that intestinal injury may also induce or perpetuate arthritis by systemic distribution of inflammatory mediators produced by intestinal immune effector cells.
(3) These findings suggest that community differences in levels of violence are perpetuated as Zapotec children learn community-appropriate patterns for expressing aggression and continue to express these patterns as adults.
(4) Post-labeling addition of 1 mM caffeine increased perpetuated blocks to a frequency of about 10% of the initial number of dimers in 4 h in XP16KO-II cells, but not in XP16KO-I and normal cells.
(5) This phenomenon may be of significance in the perpetuation of the disease.
(6) Trierweiler has broken a fundamental principle of French political life, an unwritten law inherited from the Ancien Régime and perpetuated by France's revolutionary nomenklatura, that the private life – and by that I mean sex life – of a public figure must remain inviolable.
(7) The ways in which medical personnel have opposed the political abuse of medicine is explored by a brief review of the opposition of Chilean doctors to torture, the involvement of South African doctors in opposing the abuse of health services in perpetuating apartheid, and the growing medical movement in opposition to nuclear war.
(8) Utilization data are known to be strongly influenced by the supply of facilities, particularly beds; unless this can be taken into account there is a likelihood that historical patterns will simply be perpetuated whether justified or not.
(9) Health care professionals hold attitudes toward persons with disabilities that are similar to those of society as a whole, and they may be actual perpetuators of this limiting practice.
(10) Moreover, genetics textbooks consistently employ confused or misleading definitions of the concept of heritability that, together with the reporting of discredited data, perpetuate a fundamentally inaccurate understanding of the genetics of intelligence.
(11) Even the most popular Shia cleric, Sayyed Mohammed Fadlallah , a man who has deeply affected the thinking of key Hezbollah leaders and cadres since the party's inception, now says in no uncertain terms that Shias and the country as a whole want to see, and should see, a strong Lebanese army as the nation's sole protector; and that the perpetually unstable confessional system must be ended as soon as possible.
(12) When this parliament votes for another referendum as it inevitably will, thanks to the perpetual crutch that the Greens provide, let’s not pretend it reflects the will of the Scottish people, because it doesn’t.
(13) The study has shown that: There is a significant increase in the severity of gingivitis during pregnancy; The gingival changes progressively increase during the course of pregnancy; The gingival changes are more marked than the periodontal changes seen during pregnancy (increase in periodontal disease was seen in only a limited number of cases); There was an appreciable increase in the calculus and debris deposits in the pregnant as compared to the nonpregnant women; Increase in the calculus and debris deposits was apparent in all the trimesters of pregnancy; Gingival changes showed a greater correlation with the calculus and the debris index in the pregnant than in the nonpregnant women; The role of the irritant oral deposits either as a precipitating or perpetuating factor in the genesis of gingivitis during pregnancy can not be excluded.
(14) Also in the Lords amongst the phalanx of red leather benches is a solitary seat curbed by an armrest provided for a perpetually drunken Lord (hence the saying?)
(15) In addition, TNF is produced and cleared from the blood-stream within a short period of time after an LPS stimulus, suggesting that TNF sets into motion a chain of events that may be self-perpetuating even in the absence of further TNF stimulus.
(16) One of the most tragic aspects of child abuse and neglect is that it is so often perpetuated from one generation to another.
(17) Yet, for many reasons, clinicians tend to resist rapid changes and perpetuate antiquated practices, diagnostic strategies, and clinical policies.
(18) The role of Ixodes ricinus and possible other vectors in perpetuating transmission of the European infection remains to be defined.
(19) It is caused by an intense, self-perpetuating process of clot-formation and lysis within the abnormal vascular channels of the haemangioma, and results in consumption of platelets and clotting factors.
(20) The central role of platelet-vessel wall interaction in the initiation and perpetuation of this process is well established.