| 释义 |
seeder|ˈsiːdə(r)|
Also 1 sǽdere, sédere, 4 seder.
[OE. sǽdere, f. sǽd seed n.: see -er1.]
†1. One who sows seed; a sower. Also fig. Obs.
c950Lindisf. Gosp. Mark iv. 3 Herað heono eode ðe sawende vel sedere to sawenne. c1000ælfric Hom. (Thorpe) II. 88 Sum sædere ferde to sawenne his sæd. 1398Trevisa Barth. De P.R. ix. xviii. (Tollemache MS.), [October] is payntid in þe liknesse of a seder [1495 sower] þat soweþ his corne. a1500Sayings of Philosophers (Tollemache MS.), [Socrates] seide to his dissiples: I am the Seeder [Caxton tilman], and the vertues of the soule bene seedis.
2. A mechanical contrivance for sowing seed.
1868Rep. Iowa Agric. Soc. 1867 226 The seeder can be adjusted in five minutes. 1875Knight Dict. Mech., Seeder,..a seed-sower for gardens. 1883Sci. Amer. 3 Mar. 139/4 Seeder and cultivator. 1899Daily News 13 July 4/6 The modern seeder leaves to the sower no heavier work than the guidance of his team from the waggon seat.
3. cloud seeder: one who or that which seeds clouds.
1953Jrnl. Amer. Water Works Assoc. XLV. 1144/1 The skilled commercial cloud seeder is qualified by training and experience to undertake the large-scale operations that make cloud seeding economically worthwhile. 1958Ann. Reg. 1957 485 Experiments with an electrostatic cloud seeder consisting of an aircraft trailing two 300 ft. cables carrying a 50,000 volt charge of electricity. 1975Nature 28 Aug. 690/3 The responsibility..rests as much with the policy makers as it does with the plant breeders, the climatologists and the cloud seeders. 1981Economist 20 June 55/1 Utilities that hire cloud-seeders, hoping to increase water-flow into their reservoirs, may cause the heavens to fall on the tourist industry.
Sense 3 in Dict. becomes 5. Add: 4. [f. seed v. 10.] A device for extracting seeds from fruit. orig. U.S.
1895in Funk's Stand. Dict. 1897Sears, Roebuck Catal. 102/1 The Crown Raisin Seeder. Patented October 26, 1896... Seeds one pound of raisins in five minutes with less waste than any machine made. 1977Washington Post 1 Sept. (Maryland Weekly) 3/2 Over at the Old Timer's Show exhibits haven't changed for years. Spinning wheels, crock churns, grape seeders, wood pumps, oil lamps, antique engines and smoothing irons are some of the 500 items that have been standard displays. 1989Grocer 29 Apr. 27/1 (Advt.), When production demands seeded products, a section of the standard belt is wheeled out and replaced by the seeder unit.
5. With defining word: a plant that produces seeds (in a particular way or under particular conditions).
1927Daily Express 11 Aug. 3/1 The ‘Daily Express’ {pstlg}5 prize competition for the tallest hollyhock by a certain date... ‘Longfellow’ is a Watford entry. ‘Please hurry up, because he is going to seed,’ is the urgent request accompanying the entry. Early seeders must take their chance... Hollyhocks become broody at their own risk. 1977J. L. Harper Population Biol. of Plants xxii. 701 It may be the last dying burst of reproduction that is critical for the multiplication of a particular genotype and the precocious seeder will be at no advantage. 1987Vegetatio LXX. 17/2 Populations of the obligate-seeder, B[anksia] ericifolia, were even-aged. 1989Oecologia LXXX. 304/1 We hypothesized that tissues of seedlings of the obligate seeder, C[eanothus] megacarpus, would have greater drought tolerant characteristics than tissues of seedlings of either R[hus] laurina or C. spinosus. |