What's the difference between annual and perennial?

Annual


Definition:

  • (a.) Of or pertaining to a year; returning every year; coming or happening once in the year; yearly.
  • (a.) Performed or accomplished in a year; reckoned by the year; as, the annual motion of the earth.
  • (a.) Lasting or continuing only one year or one growing season; requiring to be renewed every year; as, an annual plant; annual tickets.
  • (n.) A thing happening or returning yearly; esp. a literary work published once a year.
  • (n.) Anything, especially a plant, that lasts but one year or season; an annual plant.
  • (n.) A Mass for a deceased person or for some special object, said daily for a year or on the anniversary day.

Example Sentences:

  • (1) In the bars of Antwerp and the cafes of Bruges, the talk is less of Christmas markets and hot chocolate than of the rising cost of financing a national debt which stands at 100% of annual national income.
  • (2) The form of the harvested crop, varietal characteristics and annual growing conditions have less bearing.
  • (3) The aim of the present study was to bring forward data of acceptance of dental treatment for 3-16-yr-old children in a population with good dental health and annual dental care, and to evaluate the influence on acceptance of age, sex, residential area, and previous experience and present need of dental treatment.
  • (4) In addition, recent increase of the annual incidence of the above both groups was clarified.
  • (5) The biggest single source of air pollution is coal-fired power stations and China, with its large population and heavy reliance on coal power, provides $2.3tn of the annual subsidies.
  • (6) Gove, who touched on no fewer than 11 policy areas, made his remarks in the annual Keith Joseph memorial lecture organised by the Centre for Policy Studies, the Thatcherite thinktank that was the intellectual powerhouse behind her government.
  • (7) Murder-suicide occurs with an annual incidence of 0.2 to 0.3 per 100,000 person-years and accounts for approximately 1000 to 1500 deaths yearly in the United States.
  • (8) The company said it was on track to meet forecasts for annual profit of about £110m.
  • (9) The results of the examination of the tuberculosis cases detected during 7 years among the annually screened population are given.
  • (10) The annual cost of treatment is $200,000 (£130,000), and patients may live for tens of years.
  • (11) The figures, published in the company’s annual report , triggered immediate anger from fuel poverty campaigners who noted that energy suppliers had just been rapped over the knuckles by the Competition and Markets Authority (CMA) for overcharging .
  • (12) In April 1986, magnetic resonance imaging (MRI) of the thorax and shoulder girdle was presented to the 99th Annual Meeting of the American Association of Anatomists.
  • (13) However, shortly before this date, she says she was informed she would not receive the annual uprating.
  • (14) This comprised of 19.0 percent of the average annual bacillary pulmonary cases.
  • (15) Use of blood and blood products increased annually as did the number of patients crossmatched and transfused.
  • (16) During the 1985 annual meeting of the Congress of Neurological Surgeons in Honolulu, neurosurgical training and practice in India, Korea, Japan, and Australasia were discussed at the International Committee symposium.
  • (17) Compared to the benefits, the annual risk of developing a side effect of the medication is much higher.
  • (18) The thinktank Open Europe estimates that the UK would pay 94% of its current costs (£31.4bn annually) if it left the EU but adopted a Norway-type arrangement.
  • (19) Blight responded with a hypothetical, telling Ludlam if the ASD asked a foreign agency to get material about Australian citizens it could not access under Australian law, the IGIS would know about it and flag it in its annual report.
  • (20) The long-term annual incidence of ipsilateral cerebral infarction was 0.67 percent in patients operated upon and 2.70 percent in patients unoperated upon.

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.