embryoidadj.n.
/ˈɛmbrɪɔɪd/, U.S. /ˈɛmbriˌɔɪd/ A. adj.
Biology. Resembling (that of) an embryo or embryonic structure.embryoid body: see Compounds.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [adjective]
embryonal1659
embryonated1670
embryonical1670
embryonate1693
fetal1736
embryonic1740
embryotic1742
embryonary1833
embryoid1863
preborn1962
1863 Proc. Calif. Acad. Sci. 1858–62 2 38 Peduncles twice the length of the leaves; umbels six to ten-flowered, bract of a single sessile obovate leaf (a few separate pink glands or embryoid stipules often present).
1899 Jrnl. Amer. Med. Assoc. 7 Oct. 910/2 Hence Munch suggests, as the most expressive name for them, ‘tridermic tumors’ as more appropriate than Wilms' ‘rudimentary parasites’ or ‘embryomata’ for encysted tumors, and ‘embryoid tumors’ for the solid variety.
1905 Jrnl. Med. Res. 8 549 Both normal and embryoid tissues contain intracellular enzymes which are practically similar to those found in tumors.
1932 Amer. Jrnl. Surg. 15 261/2 Teratomata testis are divided into:..Embryoid, teratoid or mixed tumors.
2005 J. Panno Stem Cell Res. v. 71 Society..might accept the procedure if it started with AS [= adult stem] or UCS [= umbilical cord stem] cells, particularly if they can be trained to produce real organs and not just a mass of embryoid tissue.
B. n.
Botany. A mass of dividing cells produced artificially in tissue culture from a single somatic or gametic cell of a parent plant, and which is capable of developing into a plant.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [noun] > parts of > embryo or radicle
embryon1640
germen1651
neb1658
radicle1671
embryo1682
embryo plant1692
plantula1698
plantleta1711
germ1721
niba1722
radicula1725
plantule1727
radicule1728
rostellum1760
radicale1763
rostel1783
heartlet1808
corcle1810
proembryo1849
tigelle1860
hypophysis1875
embryoid1963
1963 F. C. Steward et al. in Amer. Jrnl. Bot. 50 618/2 When, by appropriate devices, cells are freed from the proliferating margins of a cultured explant, they multiply in a liquid medium and then form ‘embryoids’ which develop into plantlets, from which the whole life cycle of the carrot can be completed.
1971 New Scientist 29 Apr. 263 (caption) These cells are then cultured, and from them are grown embryoids and eventually whole ‘pomatoes’.
1980 Nature 27 Mar. 341/2 We report here a repeatable precocious flowering of embryoids derived from mature ginseng root callus.
2012 D. L. Hartl & M. Ruvolo Genetics (ed. 8) viii. 295/1 A subsequent change of plant hormones in the growth medium causes the embryoid to form a small plant with roots and leaves that can be potted in soil.
Compounds
embryoid body n. Biology (originally) an aggregate of cells that develops when certain mouse tumours are grown in culture, and which bears some resemblance to an early embryo in its structure and potential for differentiation; (in later use also) a similar aggregate derived from cells from other sources, esp. embryonic stem cells.
ΘΚΠ
the world > life > biology > substance > cell > types of cells > [noun] > aggregate of cells
embryoid body1958
1958 Jrnl. Nat. Cancer Inst. 20 1263 These embryoid bodies have not been observed in primary strain 129 [mouse] teratomas.
1977 C. F. Graham in M. I. Sherman Concepts in Mammalian Embryogenesis vii. 332 The greatest range of differentiated tissue forms after both simple and cystic embryoid bodies are plated out on tissue culture dishes.
2000 Guardian 8 May i. 9/2 They grow into a kind of cell porridge called an ‘embryoid body’, with millions of nerve, heart and skin cells jumbled up higgledy piggledy.
2009 Proc. National Acad. Sci. U.S.A. 106 7617/2 In brief, hESCs [= human embryonic stem cells] were dissociated and induced to differentiate as embryoid bodies in NIM medium.
This entry has been updated (OED Third Edition, September 2013; most recently modified version published online March 2022).
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adj.n.1863