单词 | embryo- |
释义 | embryo-comb. form Chiefly Medicine and Biology. Forming nouns and adjectives relating to an embryo (or fetus). embryocardia n. Brit. /ˌɛmbrɪə(ʊ)ˈkɑːdɪə/ , U.S. /ˌɛmbrioʊˈkɑrdiə/ [after French embryocardie (1888 or earlier)] now rare the condition (in post-natal life) of having equally spaced heart sounds, as in the fetus.ΚΠ 1888 Boston Med. & Surg. Jrnl. 24 May 531/2 Huchard gives to this quality of cardiac action the name of embryocardia, and regards it as a symptom of the very worst augury. 1899 T. C. Allbutt et al. Syst. Med. VI. 813 The name ‘embryocardia’..is pedantic if it means merely a very rapid heart; misleading if it means that the heart has undergone some reversion to a fetal state. 1908 W. Osler & T. McCrae Syst. Med. IV. 275 Tachycardia with embryocardia exhibits phenomena which correspond to a prolonged series of extrasystole. 1959 J. R. Christian in A. A. Luisada Cardiology II. iii. 147 The rapid rate and equal intensity of the sounds in the new-born produce a tic-tac type of rhythm or embryocardia, similar to that heard in the fetus. embryoplastic adj. Brit. /ˌɛmbrɪə(ʊ)ˈplastɪk/ , U.S. /ˌɛmbrioʊˈplæstɪk/ [probably after French embryoplastique (1835 or earlier)] now rare designating tissue involved in the formation of the embryo; of or relating to such tissue.ΚΠ 1858 Brit. Jrnl. Dental Sci. 2 41/2 These elements..appear identical with the same elements so abundant in the fœtus in the very early periods of gestation; whence they have been also called ‘embryo-plastic’. 1867 N.Y. Med. Jrnl. Jan. 249 There is an early period of fœtal life, previous to the formation of connective tissue, in which we find only embryo-plastic nuclei and fusiform bodies in amorphous matter. This is called embryo-plastic tissue. 1940 Jrnl. Pediatrics 16 483 Since seemingly little progress has been made during the centuries in our etiological conception of embryoplastic deformities, the actual causal agency of this retardation of the lower jaw remains obscure. embryoscope n. Brit. /ˈɛmbrɪəskəʊp/ , U.S. /ˈɛmbriəˌskoʊp/ [after German Embryoskop (1882 or earlier)] any of various types of apparatus or instrument used for visual examination of an embryo.ΚΠ 1887 Amer. Naturalist 21 297 The embryoscope devised by Hartnack represents an improved form of the drawing apparatus introduced by Professor His. 1898 Tit-Bits 23 Apr. 69/1 It was discovered by a German physiologist by the use of an embryoscope, or egg-glass, that the shells of eggs were of very unequal thickness. 1995 J. C. Anderson in R. J. Trent Handbk. Prenatal Diagnosis iv. 76 Advances in fibre optics have made the visualization of the first-trimester fetus possible using ‘embryoscopes’ as small as 1.7 mm in diameter. 2012 Liverpool Echo 17 Sept. 9 Three years ago, the embryoscope was developed which took a series of pictures every 20 minutes of the way the embryo was developing, but it still needed humans to decide which embryo was best for implant. embryoscopic adj. Brit. /ˌɛmbrɪə(ʊ)ˈskɒpɪk/ , U.S. /ˌɛmbriəˈskɑpɪk/ , /ˌɛmbrioʊˈskɑpɪk/ [after German embryoskopisch (1885 or earlier)] of or relating to embryoscopy.ΚΠ 1889 Cent. Dict. Embryoscopic, pertaining to the examination of embryos by means of the embryoscope. 1937 Monogr. Soc. Res. Child Devel. 2 90 While still on the 12th day the embryoscopic observation presents no difficulties; at the end of the 13th on account of the increasing opacity already less is perceivable. 1999 Seminars Perinatol. 23 424/1 Embryoscopic and fetoscopic examinations, with their potential for in utero therapy, represent an extension of the existing array of prenatal techniques as well as the beginning of a new era of early pregnancy intervention. embryoscopy n. Brit. /ˌɛmbrɪˈɒskəpi/ , U.S. /ˌɛmbriˈɑskəpi/ [after German Embryoskopie (1879 or earlier)] the visual examination of an embryo or fetus; the use of an embryoscope; an instance of this.ΚΠ 1879 Brit. Med. Jrnl. 20 Sept. 462/1 On Embryoscopy. By Professor Preyer (Jena). 1978 Endoscopy 10 47 A preliminary report about transcervical embryoscopy. 1997 R. Tong Feminist Approaches to Bioethics ix. 215 At present, there are three basic approaches to identifying fetal defects in utero. The first approach involves visualization, which can be either noninvasive (ultrasonography) or invasive (embryoscopy, fetoscopy, and endoscopy). 2004 Fertility & Sterility 82 1338/2 Among the abnormal embryos, embryonic GD [= growth disorganization] was detected in 11 embryoscopies. ΚΠ 1828 Lancet 22 Mar. 898/2 Rude attempts to introduce the hand—the rapid abstraction of the head by embryospastic instruments—or the sudden eruption of the cranium from the pelvis, under the natural efforts, at a time when the perineum is unprotected by the accoucheur: these are the principal causes of laceration. 1879 Brit. Med. Jrnl. 5 July 33/2 Madden, Thomas More, M.D. On the Judicious Use and Selection of Embryospastic Operations. embryotoxic adj. Brit. /ˌɛmbrɪə(ʊ)ˈtɒksɪk/ , U.S. /ˌɛmbrioʊˈtɑksɪk/ toxic to an organism during its embryonic development; causing malformation, disease, or death of an embryo.ΘΚΠ the world > physical sensation > use of drugs and poison > poison > [adjective] > specific botulinum1910 pesticidal1937 fungitoxic1945 embryotoxic1949 lathyrogenic1958 scombrotoxic1967 genotoxic1973 1949 Proc. Soc. Exper. Biol. & Med. 72 563/2 Incubation of aureomycin at 56°C for five days destroys the embryo-toxic principle as well as its antibiotic activity. 1960 Congenital Malformations: Ciba Found. Symp. 108 The time-graded relationship between the action of various embryotoxic substances and the response of different regions of the early embryo. 2006 Fertility & Sterility 86 972/2 Our group and others have demonstrated direct embryotoxic properties of the hydrosalpingeal fluid in murine models. embryotoxicity n. Brit. /ˌɛmbrɪə(ʊ)tɒkˈsɪsᵻti/ , U.S. /ˌɛmbrioʊtɑkˈsɪsədi/ toxicity to an organism during its embryonic development; the property or fact of being embryotoxic.ΘΚΠ the world > physical sensation > use of drugs and poison > poison > [noun] > quality of being poisonous > specific fungitoxicity1945 hepatotoxicity1952 nephrotoxicity1957 embryotoxicity1964 mycotoxicity1969 genotoxicity1978 1964 Life Sci. 3 988 The teratogenic action of thalidomide in the rabbit is well established..and for this reason we have used this species for examining the embryotoxicity of some twelve compounds chemically related to the drug. 1971 Nature 25 June 483/3 Dioxin..when fed to pregnant rats causes embryotoxicity at doses of 0.000125 mg/kg. 2011 Reprod. Toxicol. 32 214/1 (heading) Assessment of embryotoxicity/teratogenicity. This entry has been updated (OED Third Edition, September 2013; most recently modified version published online March 2022). < comb. form1828 |
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