cytoidn.adj.
/ˈsʌɪtɔɪd/, U.S. /ˈsaɪˌtɔɪd/ Biology and Medicine.
A. n.
A cell-like structure; a cytoid body; (in early use) spec. †a leucocyte (obsolete).
ΘΚΠ
the world > life > biology > substance > cell > types of cells > [noun] > phagocytic cells > leucocyte or lymphocyte
cytoid1850
leucocyte1870
cytode1883
macrophage1887
lymphocyte1890
memory cell1892
macrophagocyte1896
lymphoblast1909
thymocyte1929
siderophage1941
Sézary cells1953
1850 Med. Times 12 Oct. 371/1 Henle..believes that they proceed from cytoids or corpuscles, exposed for some time to the air; he recognises, however, in other cases, limpid cells of larger size furnished with a nucleus.
1870 G. Rolleston Forms Animal Life p. xviii (note) Chauveau's experiments..shew that in the absence, if not of certain animal cells, still of certain animal ‘cytoids’ or ‘leucocytes’, the vaccine poison is inoperative.
1913 Amer. Naturalist 47 524 The formative protoplasm of the egg in this way unburdens itself of a considerable volume of inert and probably deleterious material, which..remains within the zona pellucida and more or less completely surrounds the egg in the form of pseudo-epithelium of cell-like masses, which I have called cytoids.
1981 Jrnl. Amer. Acad. Dermatol. 5 47/1 On IF [= immunofluorescence] testing of another specimen, an intact subepidermal bulla was present with fibrin in the bulla cavity, and cytoids stained with IgM.
2002 D. P. Vandersteen & P. J. Kurtin in L. Cheng & D. G. Bostwick Essent. Anat. Pathol. ix. 50/2 Shaggy deposition of fibrinogen and cytoids in the dermis and at the dermal-epidermal junction may also be seen.
B. adj.
Resembling a cell; cell-like; (in early use) spec. †designating a leucocyte (obsolete).Cytoid body is now used most frequently in ophthalmology for small circular or oval patches seen in the retina, representing damaged and swollen nerve fibres, and also in dermatopathology for round structures typically representing degenerated keratinocytes or basement membrane.
ΘΚΠ
the world > life > biology > substance > cell > types of cells > [adjective] > phagocytic cells > leucocyte or lymphocyte
cytoid1853
lymphocytic1896
macrophagic1904
lymphoblastic1905
littoral1930
neutrophil1930
1853 Brit. & Foreign Medico-chirurg. Rev. 11 68 Lehmann believes that no difference whatever exists between pus-corpuscles (or, as Henle terms them, cytoid-corpuscles), lymph-corpuscles, colourless blood-cells, and mucus-corpuscles.
1870 G. Rolleston Forms Animal Life p. xvii (note) No morphological unit, nor even any cell-like or ‘cytoid’ body, can have been at work.
1913 Lancet 27 Sept. 929/1 Cytoid bodies are formed which ultimately undergo further disintegration.
1968 New Eng. Jrnl. Med. 1 Feb. 270/1 The ocular findings in patients with systemic lupus erythematosus include retinal hemorrhages and fluffy exudates called cytoid bodies.
1975 Brit. Jrnl. Dermatol. 93 17 We have attempted to investigate the diagnostic significance of these cytoid bodies and fibrin deposits in a number of inflammatory dermatoses.
2005 D. J. Wallace Lupus Bk. xvi. 122 These cytoid bodies..indicate either old, healed retinal vasculitis or signify that a clot has traveled to the eye.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).
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n.adj.1850