| 单词 |
reproductive |
| 释义 |
▪ I. reproductive, a.|riːprəˈdʌktɪv|
[f. reproduce, after productive.]
1. Of the nature of, pertaining to, or effecting, reproduction.
1753Chambers Cycl. Supp. App. s.v. Reproduction, What is said of the want of the reproductive power of these parts, relates only to the head and tail ends. 1830Lyell Princ. Geol. I. 200 We might divide the consideration of springs..into their destroying and reproductive agency. 1865Merivale Rom. Emp. VIII. lxviii. 353 The slave population was not reproductive; it was only kept at its level by fresh drafts from abroad. 1890‘R. Boldrewood’ Col. Reformer (1891) 241 Plans of reproductive outlay, certain to pay cent per cent.
2. spec. in Biol. Connected with or effecting generative reproduction in animals or plants.
1836–9Todd's Cycl. Anat. II. 412/1 This type of the reproductive apparatus extends through a wide range of animals. 1859Ibid. V. 220/1 Reproductive organs of the red Algæ. 1870Rolleston Anim. Life Introd. 47 The reproductive system has furnished a basis for the division of the Class Mammalia. 1888Rolleston & Jackson Anim. Life 208 Ordinary nephridia, which take on a sexual function at the reproductive season.
Hence reproˈductively, reproˈductiveness, reproducˈtivity.
1860Pusey Min. Proph. 167 Moab..had the degrading worship of Baal-peor, re-productiveness. 1873Symonds Grk. Poets viii. 240 A profound sympathy with nature in her large and perpetual reproductiveness. 1881Academy 30 Apr. 322 The common impressionability and reproductivity of nervous tissue. 1883Chicago Advance 3 May, None can..have been so reproductively fruitful as that first one.
▪ II. reproductive, n. Zool.|riːprəˈdʌktɪv|
[f. the adj.]
A reproductive insect.
1934C. A. Kofoid Termites i. 8 The alates become functional reproductives only after they leave the parent colony and, in isolation, start a new one. 1971E. O. Wilson Insect Societies (1972) xix. 370/2 Some of the workers are inseminated and serve as the usual reproductives. 1977Nature 2 June 395/3 At a critical time..approximately one generation time before the season ends, the entire effort is thrown into producing reproductives (queens and males). |
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