| 释义 |
deuto-
before a vowel deut-, a shortened form of deutero-, used
1. In Chemistry to distinguish the second in order of the terms of any series. Thus deuˈtoxide, the second of the series of oxides of a metal, etc., that which comes next to the protoxide, containing the next smallest quantity of oxygen. So deut-iodide, deuto-bromide, deuto-carbonate, deuto-chloride, deuto-sulphide, etc. The prefix has sometimes been improperly used to indicate the constitution of a compound, as compared with that of the proto- or mono- compound of the same series; but it is now obsolescent, being usually replaced by such prefixes as sesqui-, di-, tri-, etc., which properly indicate the constitution.
1810Henry Elem. Chem. (1826) I. 263 Deutoxide or Peroxide of Hydrogen. Ibid. 310 This gas..examined by Dr. Priestly, and called by him nitrous air, a term afterwards changed to nitrous gas, then to nitric oxide, and more lately to deutoxide of azote, or deutoxide of nitrogen, which last appears to be its most appropriate title. 1822J. Imison Sc. & Art II. 20 The smallest quantity of oxygen forms the protoxide of the metal, the second quantity of oxygen makes the deutoxide. 1854J. Scoffern in Orr's Circ. Sc. Chem. 489 Binoxide, sometimes called deutoxide of copper (Cu O2). 1857Bullock Cazeaux' Midwif. 137 Precipitated by the deuto-chloride of mercury. 1864H. Spencer Illust. Univ. Progr. 40 Later in the Earth's history, are the deutoxides, tritoxides, etc. 1864― Biol. I. 6 Deutoxide of nitrogen is a gas hitherto uncondensed.
2. In many terms of Biol.; as deutenˈcephalon [Gr. ἐγκέϕαλος brain], the second of the three primary cerebral vesicles of the embryo. Hence deutenceˈphalic a. ‖ deutoˈmala [L. māla jaw], the second pair of jaws of the Myriapoda; hence deutoˈmalar a. deuˈtomerite [Gr. µέρος part], the second or posterior cell of a dicystid gregarine, as distinguished from the smaller anterior cell or protomerite. ˈdeutoplasm [Gr. πλάσµα anything formed], term applied by Reichert to the food-yolk of the mero-blastic egg, e.g. the yellow yolk of a bird's egg; also, the special form of protoplasm which composes the granules seen in the centre of the protamœba (Syd. Soc. Lex.); hence deutoˈplasmic, -ˈplastic a., of, pertaining to, or of the nature of deutoplasm; ˌdeutoplaˈsmigenous a., producing deutoplasm; deutoˈplasmogen, that which forms or is converted into deutoplasm. deutoˈsclerous a., [σκληρός hard], in deutosclerous tissue, Laurent's term for osseous tissue. deutoˈscolex [σκώληξ worm], a secondary scolex, or daughter-cyst of a scolex or cystic worm; the cysticercus of the Tæniæ. deutoˈtergite [L. tergum back], the second dorsal segment of the abdomen of insects. deuˈtovum [L. ovum egg] pl. -ova, a secondary egg-cell, as contrasted with the protovum or normal and usual egg-cell; also called metovum, and after-egg.
1881Mivart Cat 358 The fore-brain, called also the deutencephalon. 1884Sedgwick tr. Claus' Zool. I. 111 The contents of every egg consist..(1) Of a viscous albuminous protoplasm; and (2) of a fatty granular matter, the deutoplasm or food yolk. 1886Jrnl. R. Microsc. Soc. Apr. 224 In the young unfertilized ova a small ‘protoplasmic’ and larger ‘deutoplasmic’ portion are readily distinguished. 1881Smithsonian Report 425 The development alike of excretory and deutoplasmigenous functions, at certain times of the year, of the genital glands. 1872E. R. Lankester Adv. Science (1890) 265 The others disappear as deutoplasmogen or vitellogenous cells. 1877Huxley Anat. Inv. Anim. vii. 383 The proper vitelline membrane bursts into two halves..and the deutovum emerges. 1881Athenæum 31 Dec. 904/2 The occurrence of a deutovum stage in the egg is recorded.
3. In some other words; as deutosysteˈmatic a., of or pertaining to a secondary system; deuterosystematic.
1878Gurney Crystallogr. 72 The deutosystematic planes which bisect the angles between the [protosystematic]. |