| embryonal adenoma | <tumour> A benign neoplasm in which the glandular epithelial elements are not fully differentiated, resembling immature tissue observed in embryonic development. (05 Mar 2000) |
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| embryonal area | Embryonic area, the area of the blastoderm on either side of, and immediately cephalic to, the primitive streak where the component cell layers have become thickened. (05 Mar 2000) |
| embryonal carcinoma | <tumour> A malignant neoplasm of the testis, composed of large anaplastic cells with indistinct cellular borders, amphophilic cytoplasm, and ovoid, round, or bean-shaped nuclei that may have multiple large nucleoli; in some instances, the neoplastic cells may form tubular structures; embryonal carcinoma's may be malignant teratomas without differentiated elements. (05 Mar 2000) |
| embryonal carcinosarcoma | <tumour> A neoplasm composed chiefly or entirely of immature undifferentiated cells (i.e., blast forms), with little or virtually no stroma. Synonym: blastocytoma, embryonal carcinosarcoma. Origin: blasto-+ G. -oma, tumour (05 Mar 2000) |
| embryonal leukaemia | A form of leukaemia in which the abnormal cells are thought to be the precursors of lymphoblasts, myeloblasts, or monoblasts. Synonym: embryonal leukaemia. (05 Mar 2000) |
| embryonal medulloepithelioma | <tumour> An epitheliomatous tumour of the nonpigmented layer of the ciliary epithelium. Synonym: embryonal tumour of ciliary body. (05 Mar 2000) |
| embryonal tumour | Embryonic tumour, a neoplasm, usually malignant, which arises during intrauterine or early postnatal development from an organ rudiment or immature tissue; it forms immature structures characteristic of the part from which it arises, and may form other tissues as well. The term includes neuroblastoma and Wilms' tumour, and is also used to include certain neoplasms presenting in later life, this usage being based on the belief that such tumours arise from embryonic rests. See: teratoma. Synonym: embryoma. (05 Mar 2000) |
| embryonal tumour of ciliary body | <tumour> An epitheliomatous tumour of the nonpigmented layer of the ciliary epithelium. Synonym: embryonal tumour of ciliary body. (05 Mar 2000) |
| embryonary | <biology> Embryonic. Source: Websters Dictionary (01 Mar 1998) |
| embryonate | Synonym: embryonal. 2. Containing an embryo. 3. Impregnated. (05 Mar 2000) |
| embryonated | <biology> In the state of, or having, an embryonal. Source: Websters Dictionary (01 Mar 1998) |
| embryonic | Undeveloped, related to the embryo. (16 Dec 1997) |
| embryonic axis | The cephalocaudal axis established in the embryo by the primitive streak. (05 Mar 2000) |
| embryonic blastoderm | That part of the blastoderm that takes part in the formation of the embryonic body. (05 Mar 2000) |
| embryonic cataract | A congenital cataract situated near the anterior Y suture of the foetal lens nucleus. (05 Mar 2000) |