What's the difference between perennial and yearly?

Perennial


Definition:

  • (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.

Yearly


Definition:

  • (a.) Happening, accruing, or coming every year; annual; as, a yearly income; a yearly feast.
  • (a.) Lasting a year; as, a yearly plant.
  • (a.) Accomplished in a year; as, the yearly circuit, or revolution, of the earth.
  • (adv.) Annually; once a year to year; as, blessings yearly bestowed.

Example Sentences:

  • (1) Forty-nine patients (with 83 eyes showing signs of the disease) were followed up for between six months and 12 years.
  • (2) The percentage of people with less than 10 TU titers is under 5% after the age of 5 years up to 15 years; from 15 to 60 years there are no subjects with undetectable ASO titer and after this age the percentage is still under 5%.
  • (3) Thirty-two patients (10 male, 22 female; age 37-82 years) undergoing maintenance haemodialysis or haemofiltration were studied by means of Holter device capable of simultaneously analysing rhythm and ST-changes in three leads.
  • (4) These data indicate a steady improvement in laboratory performance over the last 10 years.
  • (5) Yet the Tory promise of fiscal rectitude prevailed in England Alexander had been in charge of Labour’s election strategy, but he could not strategise a victory over a 20-year-old Scottish nationalist who has not yet taken her finals.
  • (6) Sierra Leone is one of the three West Africa nations hit hard by an Ebola epidemic this year.
  • (7) Thirteen patients with bipolar affective illness who had received lithium therapy for 1-5 years were tested retrospectively for evidence of cortical dysfunction.
  • (8) Future Brown have connections in the fashion industry, last year soundtracking a surreal film for the brand Telfar.
  • (9) Chapter one Announcement of the Islamic Caliphate The announcement of the renewal of the caliphate in Iraq in the year 1427AH [2006] was the arbiter between division and separation as well as the glory of the Muslims.
  • (10) Oculomotor paresis with cyclic spasms is a rare syndrome, usually noticeable at birth or developing during the first year of life.
  • (11) In contrast to previous reports, these tumours were more malignant than osteosarcomas and showed a five-year survival rate of only 4-2 per cent.
  • (12) The time of observation varied between 2 and 17 years.
  • (13) The previous year, he claimed £1,415 for two new sofas, made two separate claims of £230 and £108 for new bed linen, charged £86 for a new kettle and kitchen utensils and made two separate claims, of £65 and £186, for replacement glasses and crockery.
  • (14) The role of whole Mycobacteria, mycobacterial cell walls and waxes D as immunostimulants was well established many years ago.
  • (15) A 61-year-old man experienced four bouts of pancreatitis in 1 year.
  • (16) It involves creativity, understanding of art form and the ability to improvise in the highly complex environment of a care setting.” David Cameron has boosted dementia awareness but more needs to be done Read more She warns: “To effect a cultural change in dementia care requires a change of thinking … this approach is complex and intricate, and can change cultural attitudes by regarding the arts as central to everyday life of the care home.” Another participant, Mary*, a former teacher who had been bedridden for a year, read plays with the reminiscence arts practitioner.
  • (17) Children of smoking mothers had an 18.0 per cent cumulative incidence of post-infancy wheezing through 10 years of age, compared with 16.2 per cent among children of nonsmoking mothers (risk ratio 1.11, 95% CI: 1.02, 1.21).
  • (18) Michael Schumacher’s manager hopes F1 champion ‘will be here again one day’ Read more Last year, Red Bull were frustrated by Mercedes, Ferrari and Honda as they desperately looked for a new engine supplier.
  • (19) A diplomatic source said the killing appeared particularly unusual because of Farooq lack of recent political activity: "He was lying low in the past two years.
  • (20) Extensive studies during recent years have shown that the interaction between hormone and membrane-bound receptor can affect the receptor characteristics in at least two ways.