| 释义 |
seasonal, a. and n.|ˈsiːz(ə)nəl|
[f. season n. + -al1.]
A. adj.
1. Pertaining to or characteristic of the seasons of the year, or some one of them.
seasonal dimorphism, a variation in the appearance of different broods of the same insect according to the time of year at which they are produced.
1838Mudie Phys. Man. ii. 58 The call of the partridge—the seasonal song of the nightingale. 1844H. Stephens Bk. Farm I. 291 The daily and seasonal motions of the earth. 1887Abercromby Weather 51 Changes which are due to..the season of the year..we shall call..seasonal variations of the general character. 1888Rolleston & Jackson Anim. Life 238 The individuals of broods appearing at different times of the year often differ from one another in a marked manner. In this case the phrase seasonal dimorphism is employed. 1894Coit in Forum (U.S.) May 285 The regular seasonal lack of work is no dire calamity.
b. transf. Pertaining to the seasons or periods of human life.
1843J. Martineau Chr. Life (1867) 3 The seasonal changes of character, of which I now speak. 1866Alger Solit. Nat. & Man ii. 46 So shall we hereafter retrace in our successive sorrows the seasonal stages of our growth.
2. Of certain trades: Dependent on the seasons. Of workers, servants: Employed or engaged only during a particular season.
1904Daily News 30 Dec. 6/2 The problem of the casual and seasonal worker. 1909Times 13 Feb. 4/3 Hotel servants were not of the best class; they were seasonal. 1909Englishwoman Apr. 225 Some trades are seasonal: there is a great rush of work to be done at one season and comparatively little at another.
3. Periodical, recurrent at more or less regular intervals.
1880Jevons Methods Soc. Ref. (1883) 313 The seasonal fluctuations of a small paper currency. 1893Solomon in Class. Rev. Feb. 11/1 These regularly recurrent diseases..are, I believe, called by the doctors ‘seasonal’. 1899Allbutt's Syst. Med. VIII. 557 In some patients the relapses have a certain seasonal periodicity.
B. n. A periodical issued at certain seasons of the year.
1895(title) The Evergreen: a Northern Seasonal. 1897Pall Mall Gaz. 24 Nov. 11/3 Mr. Scott has decided to issue his ‘Book Sales’ as a seasonal instead of as an annual.
Add:[A.] 4. Special collocation: seasonal affective disorder, a form of depression which tends to occur during the same season (usu. winter) every year and is characterized by loss of motivation, hypersomnia, and often a craving for foods rich in carbohydrates. Abbrev. SAD s.v. *S 4 a.
1983Chicago Sun-Times 21 Dec. 11/1 The dark moods that come with shorter days of winter are called Seasonal Affective Disorder. 1986Sci. Amer. Aug. 57a/1 Two-thirds of people who have a recently recognized syndrome, seasonal affective disorder (SAD), crave carbohydrates and gain weight when they are depressed. 1992Atlantic Sept. 66/1 In the fall and winter Robert receives..two hours of light therapy daily to treat the seasonal affective disorder. |