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 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 spot — The nucleolus of an ovum …   Dictionary of invertebrate zoology

  • germinal spot — the nucleolus of an oocyte …   Medical 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 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… …   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

  • germinal disk — n. 1. a disklike spot in a fertilized ovum in which the first traces of the embryo are visible 2. the disklike spot on the yolk of a heavily yolked egg where segmentation begins after fertilization: see EGG1 …   English World dictionary

  • Germinal disc — The Germinal Disc is a small, circular, white spot (approximately 2 3 mm across) on the surface of the yellow yolk of an egg that has been laid. The nucleus of the egg is in the blastodisc …   Wikipedia

  • germinal disk — noun a small circular white spot on the surface of the yolk of an egg …   Wiktionary

  • Germinative spot — Germinative Ger mi*na*tive, a. [Cf. F. germinatif.] Pertaining to germination; having power to bud or develop. [1913 Webster] {Germinative spot}, {Germinative vesicle}. (Biol.) Same as {Germinal spot}, {Germinal vesicle}, under {Germinal}. [1913… …   The Collaborative International Dictionary of English

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