vitello-comb. form
combining form (cf. vitelli- comb. form) of vitellus n., used in a few terms (Biology and Chemistry).
vitello-duct n. 
/vʌɪˈtɛlə(ʊ)dʌkt/, /vəˈtɛloʊˌdək(t)/
Brit. /vᵻˈtɛlə(ʊ)dʌkt/
, /vᵻˈtɛlə(ʊ)dʌkt//vʌɪˈtɛlə(ʊ)dʌkt/U.S. /vaɪˈtɛloʊˌdək(t)/
, /vaɪˈtɛloʊˌdək(t)//vəˈtɛloʊˌdək(t)/ΚΠ
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 647 Internally it opens, when single, into the vitello-duct, or germ-duct.
vitello-intestinal adj. /vᵻˌtɛləʊɪntɛˈstʌɪnl/, /vʌɪˌtɛləʊɪnˈtɛstᵻnl/, /vʌɪˌtɛləʊɪntɛˈstʌɪnl/, /vəˌtɛloʊᵻnˈtɛstən(ə)l/
Brit. /vᵻˌtɛləʊɪnˈtɛstᵻnl/
, /vᵻˌtɛləʊɪnˈtɛstᵻnl//vᵻˌtɛləʊɪntɛˈstʌɪnl//vʌɪˌtɛləʊɪnˈtɛstᵻnl//vʌɪˌtɛləʊɪntɛˈstʌɪnl/U.S. /vaɪˌtɛloʊᵻnˈtɛstən(ə)l/
, /vaɪˌtɛloʊᵻnˈtɛstən(ə)l//vəˌtɛloʊᵻnˈtɛstən(ə)l/ΚΠ
1854 J. S. Bushnan in Orr's Circle Sci.: Org. Nature I. 84 A communication is found to have arisen between the yolk and the intestine, by a wide duct termed the vitello-intestinal duct.
vitello-lutein n. /vʌɪˌtɛlə(ʊ)ˈl(j)uːtɪɪn/, /vəˌtɛləˈludiən/
Brit. /vᵻˌtɛlə(ʊ)ˈl(j)uːtɪɪn/
, /vᵻˌtɛlə(ʊ)ˈl(j)uːtɪɪn//vʌɪˌtɛlə(ʊ)ˈl(j)uːtɪɪn/U.S. /vaɪˌtɛləˈludiən/
, /vaɪˌtɛləˈludiən//vəˌtɛləˈludiən/ΚΠ
1886 A. H. Buck Ref. Handbk. Med. Sci. II. 247/2 In the red eggs of Maja squinado R. Maly found two kinds of coloring matter, which he named vitellolutein and vitellorubin.
1886 A. H. Buck Ref. Handbk. Med. Sci. II. 248/1 Vitellolutein is soluble in alcohol to a clear yellow solution.
vitello-rubin n. /vʌɪˌtɛlə(ʊ)ˈruːbɪn/, /vəˌtɛləˈrubən/ (see quots.).
Brit. /vᵻˌtɛlə(ʊ)ˈruːbɪn/
, /vᵻˌtɛlə(ʊ)ˈruːbɪn//vʌɪˌtɛlə(ʊ)ˈruːbɪn/U.S. /vaɪˌtɛləˈrubən/
, /vaɪˌtɛləˈrubən//vəˌtɛləˈrubən/ΚΠ
1886 A. H. Buck Ref. Handbk. Med. Sci. II. 248/1 Vitellorubin occurs in an amorphous form, soluble in alcohol to a brown fluid.
vitellogenesis n. /vʌɪˌtɛlə(ʊ)ˈdʒɛnᵻsɪs/, /vəˌtɛloʊˈdʒɛnəsəs/ the formation of the vitellus.
Brit. /vᵻˌtɛlə(ʊ)ˈdʒɛnᵻsɪs/
, /vᵻˌtɛlə(ʊ)ˈdʒɛnᵻsɪs//vʌɪˌtɛlə(ʊ)ˈdʒɛnᵻsɪs/U.S. /vaɪˌtɛloʊˈdʒɛnəsəs/
, /vaɪˌtɛloʊˈdʒɛnəsəs//vəˌtɛloʊˈdʒɛnəsəs/ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > yolk > formation of
vitellogenesis1956
1956 Nature 11 Feb. 277/1 (table) All [honey-bee ovaries] fully regressed; no commencement of vitellogenesis.
1974 Nature 4 Jan. 72/2 Some fish are not fully regressed and have ovaries in early stages of vitellogenesis.
vitellogenetic adj. /vʌɪˌtɛlə(ʊ)dʒᵻˈnɛtɪk/, /vəˌtɛloʊdʒəˈnɛdɪk/
Brit. /vᵻˌtɛlə(ʊ)dʒᵻˈnɛtɪk/
, /vᵻˌtɛlə(ʊ)dʒᵻˈnɛtɪk//vʌɪˌtɛlə(ʊ)dʒᵻˈnɛtɪk/U.S. /vaɪˌtɛloʊdʒəˈnɛdɪk/
, /vaɪˌtɛloʊdʒəˈnɛdɪk//vəˌtɛloʊdʒəˈnɛdɪk/ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > ovum > yolk
yolked1584
vitelliferous1819
vitelline1835
yolk1836
vitellary1847
vitelligenous1859
vitelligine1864
vitellogenous1878
alecithal1880
centrolecithal1880
heterolecithal1892
homolecithal1892
vitelligerous1898
isolecithal1926
ovovitelline1945
vitellogenetic1961
vitellogenic1964
1961 Biol. Abstr. 36 1333/1 (heading) Vitellogenetic processes of A. depilans observed by electron microscopy with further considerations on the Golgi apparatus.
1978 Nature 23 Mar. 351/2 The last female revealed no chorionated eggs and only four late vitellogenetic proximal oocytes..in the ovarioles.
vitellogenic adj. /vʌɪˌtɛlə(ʊ)ˈdʒɛnɪk/, /vəˌtɛləˈdʒɛnɪk/
Brit. /vᵻˌtɛlə(ʊ)ˈdʒɛnɪk/
, /vᵻˌtɛlə(ʊ)ˈdʒɛnɪk//vʌɪˌtɛlə(ʊ)ˈdʒɛnɪk/U.S. /vaɪˌtɛləˈdʒɛnɪk/
, /vaɪˌtɛləˈdʒɛnɪk//vəˌtɛləˈdʒɛnɪk/ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > ovum > yolk
yolked1584
vitelliferous1819
vitelline1835
yolk1836
vitellary1847
vitelligenous1859
vitelligine1864
vitellogenous1878
alecithal1880
centrolecithal1880
heterolecithal1892
homolecithal1892
vitelligerous1898
isolecithal1926
ovovitelline1945
vitellogenetic1961
vitellogenic1964
1964 Symp. Royal Entomol. Soc. ii. 37 In Drosophila, one vitellogenic oocyte is normally found in each ovariole.
1974 Nature 4 Jan. 71/2 The induction of sexual behaviour in female goldfish..by injection of ovulated eggs into the ovarian lumen of individuals with vitellogenic ovaries.
vitellogenous adj. /ˌvʌɪtᵻˈlɒdʒᵻnəs/, /ˌvaɪdəˈlɑdʒənəs/ producing the vitellus or yolk.
Brit. /ˌvɪtᵻˈlɒdʒᵻnəs/
, /ˌvɪtᵻˈlɒdʒᵻnəs//ˌvʌɪtᵻˈlɒdʒᵻnəs/U.S. /ˌvɪdəˈlɑdʒənəs/
, /ˌvɪdəˈlɑdʒənəs//ˌvaɪdəˈlɑdʒənəs/ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > ovum > yolk
yolked1584
vitelliferous1819
vitelline1835
yolk1836
vitellary1847
vitelligenous1859
vitelligine1864
vitellogenous1878
alecithal1880
centrolecithal1880
heterolecithal1892
homolecithal1892
vitelligerous1898
isolecithal1926
ovovitelline1945
vitellogenetic1961
vitellogenic1964
1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 301 This vitellogenous layer occupies the portion of the chamber behind the egg-cell.
1890 E. R. Lankester Advancem. Sci. vii. 265 The others disappear as..vitellogenous cells.
vitellogenin n. /vʌɪˌtɛlə(ʊ)ˈdʒɛnɪn/, /vəˌtɛloʊˈdʒɛnən/ [-in suffix1] a blood-borne protein from which the substance of the vitellus is made.
Brit. /vᵻˌtɛlə(ʊ)ˈdʒɛnɪn/
, /vᵻˌtɛlə(ʊ)ˈdʒɛnɪn//vʌɪˌtɛlə(ʊ)ˈdʒɛnɪn/U.S. /vaɪˌtɛloʊˈdʒɛnən/
, /vaɪˌtɛloʊˈdʒɛnən//vəˌtɛloʊˈdʒɛnən/ΘΚΠ
the world > life > the body > vascular system > blood > components of blood > [noun] > other components
iron1799
blood iron1858
prothrombin1898
thrombogen1904
chylomicron1921
myeloperoxidase1943
prealbumin1953
vitellogenin1969
1969 Jrnl. Insect Physiol. 15 1279 Two immunochemically discrete protein yolk precursors or vitellogenins appear in the blood of adult Periplaneta americana on day 4 or 5 after emergence.
1973 Nature 13 July 103/2 Insect yolk proteins, or vitellogenins, are synthesized and secreted by the fat body.
1982 Sci. Amer. Nov. 139/3 In the liver [of the garter snake] the phospholipids are incorporated into a lipophosphoprotein known as vitellogenin.
vitellophag n. /vʌɪˈtɛlə(ʊ)faɡ/, /vəˈtɛləˌfæɡ/ (also vitellophage/vɪˈtɛləʊfeɪdʒ/) [Greek -ϕαγος eating] Entomology a nucleus or energid which, during cleavage and the formation of blastoderm, remains in or moves into the vitellus and assimilates it.
Brit. /vᵻˈtɛlə(ʊ)faɡ/
, /vᵻˈtɛlə(ʊ)faɡ//vʌɪˈtɛlə(ʊ)faɡ/U.S. /vaɪˈtɛləˌfæɡ/
, /vaɪˈtɛləˌfæɡ//vəˈtɛləˌfæɡ/ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > yolk > vitellophag
vitellophag1892
1892 J. P. McMurrich in Zool. Anzeiger XV. 274 In the same manner the endoderm cells are excluded from the surface of the egg, but in this case there is an actual immigration, the cells sinking down into the interior of the yolk, and becoming ‘vitellophags’.
1904 Science 8 Apr. 588/2 There is no satisfactory evidence to show that the cells..are really such, and not dividing cleavage cells or possibly vitellophags.
1935 Jrnl. Morphol. 58 432 Each presumptive mid-gut epithelial nucleus appropriates a portion of the vitellophage cytoplasm and thus are formed the definitive mid-gut epithelial cells.
1978 R. J. Elzinga Fund. Entomol. iv. 86 Some of these nuclei remain behind to become vitellophags, cells for metabolizing yolk for embryonic use.
This entry has not yet been fully updated (first published 1920; most recently modified version published online March 2022).
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comb. form1854- electron beam
- electron camera
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