Germinal membrane
Germinal Ger"mi*nal, a. [See {Germ}.] 1. Pertaining or belonging to a germ; as, the germinal vesicle. [1913 Webster]

2. (Biol.) Of or pertaining to the germ, or germ cells, as distinguished from the somatic cells. [Webster 1913 Suppl.]

{Germinal layers} (Biol.), the two layers of cells, the ectoblast and entoblast, which form respectively the outer covering and inner wall of the gastrula. A third layer of cells, the mesoblast, which is formed later and lies between these two, is sometimes included.

{Germinal membrane}. (Biol.) Same as {Blastoderm}.

{Germinal spot} (Biol.), the nucleolus of the ovum.

{Germinal vesicle}, (Biol.), the nucleus of the ovum of animals. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • germinal membrane — blastoderm …   Medical dictionary

  • germinal membrane — noun : blastoderm …   Useful english dictionary

  • Germinal — Ger mi*nal, a. [See {Germ}.] 1. Pertaining or belonging to a germ; as, the germinal vesicle. [1913 Webster] 2. (Biol.) Of or pertaining to the germ, or germ cells, as distinguished from the somatic cells. [Webster 1913 Suppl.] {Germinal layers}… …   The Collaborative International Dictionary of English

  • Germinal layers — Germinal Ger mi*nal, a. [See {Germ}.] 1. Pertaining or belonging to a germ; as, the germinal vesicle. [1913 Webster] 2. (Biol.) Of or pertaining to the germ, or germ cells, as distinguished from the somatic cells. [Webster 1913 Suppl.] {Germinal… …   The Collaborative International Dictionary of English

  • Germinal spot — Germinal Ger mi*nal, a. [See {Germ}.] 1. Pertaining or belonging to a germ; as, the germinal vesicle. [1913 Webster] 2. (Biol.) Of or pertaining to the germ, or germ cells, as distinguished from the somatic cells. [Webster 1913 Suppl.] {Germinal… …   The Collaborative International Dictionary of English

  • Germinal vesicle — Germinal Ger mi*nal, a. [See {Germ}.] 1. Pertaining or belonging to a germ; as, the germinal vesicle. [1913 Webster] 2. (Biol.) Of or pertaining to the germ, or germ cells, as distinguished from the somatic cells. [Webster 1913 Suppl.] {Germinal… …   The Collaborative International Dictionary of English

  • membrane — 1. A thin sheet or layer of pliable tissue, serving as a covering or envelope of a part, as the lining of a cavity, as a partition or septum, or to connect two structures. SYN: membrana [TA]. 2. SYN: biomembrane. [L. membrana, a skin or m …   Medical dictionary

  • Echinococcosis — Classification and external resources Echinococcus life cycle (click to enlarge) ICD 10 B …   Wikipedia

  • blastoderm, blastoderma — The thin, disk shaped cell mass of a young embryo and its extraembryonic extensions over the surface of the yolk; when fully formed, all three primary germ layers (ectoderm, endoderm, and mesoderm) are present …   Medical dictionary

  • blastoderm — n. [Gr. blastos, bud; derma, skin] The primary epithelium formed in early embryonic development of many invertebrates; germinal membrane …   Dictionary of invertebrate zoology

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