| 释义 | ‖ metastasis|mɛˈtæstəsɪs|
Pl. metastases |mɛˈtæstəsiːz|.
[late L., a. Gr. µετάστασις removal, change, n. of action of µεθιστάναι to remove, change: see meta- and stasis.]
1. Rhet. A rapid transition from one point to another.
1586A. Day Eng. Secretary ii. (1625) 96 Metastasis or Transitio, when in briefe words we passe from one thing to another. 1589Puttenham Eng. Poesie iii. xix. (Arb.) 240 margin, Metastasis, or the flitting figure, or the Remoue. 1696Phillips (ed. 5).
2. In various scientific uses.
a. Phys. and Path. The transference of a bodily function, of a pain or a disease, of morbific matter, etc. from one part or organ to another.
1663Boyle Usef. Exp. Nat. Philos. ii. xx. 294 What not unfrequently happens in distempered Bodies by the Metastasis of the Morbifique matter. 1747tr. Astruc's Fevers 354 The milk..is very often thrown on other parts, where it creates metastases the most incorrigible and obstinate. 1842Medico-Chirurg. Rev. XXXVII. 557 Hysteria; Catalepsy; Metastasis of Hearing, &c. 1898P. Manson Trop. Diseases ix. 175 The metastasis of the pains. 1903Myers Hum. Personality I. Gloss. 19 Metastasis, change of the seat of a bodily function from one place..to another.
b. Biol. The transformation of chemical compounds into other compounds in the process of assimilation by an organism.
By some writers restricted to signify the change of non-living into other non-living matter; by others treated as synonymous with metabolism.
1875Bennett & Dyer tr. Sachs' Bot. 626 Assimilation and Metastasis (Stoffwechsel). 1878Bell tr. Gegenbaur's Comp. Anat. 13 Metastasis, or change in the arrangement of chemical elements. The body nourishes itself by replacing the material used up in metastasis by fresh matter, which is received from without.
c. Geol. (See quot.)
1886Bonney in Proc. Geol. Soc. 59 Metastasis (change of order), denoting changes rather of a paramorphic character, such, for example, as the crystallization of a limestone, the devitrification of a glassy rock.
3. gen. Transformation; change from one condition to another. rare.
1831Sir W. Hamilton Discuss. (1852) 21 note, The Infinite and Absolute are only the names of..two subjective negations, converted into objective affirmations... Some, more reasonably, call the thing unfinishable—infinite; others, less rationally, call it finished—absolute. But in both cases, the metastasis is in itself irrational. 1887Stevenson Mem. & Portraits vii. 116 The lamp and oil man, just then beginning, by a not unnatural metastasis, to bloom into a lighthouse-engineer. |
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