英语词汇“germ spot”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

germ spot n. = germinal spot n. at germinal adj. Compounds.

ΚΠ

1830 Edinb. New Philos. Jrnl. 9 299 In the unincubated egg of the common fowl, the cicatricula, or germ spot, lying on the surface of the yolk, is of a round form, a whitish colour, and generally about one-sixth of an inch in diameter.

1879 tr. E. Haeckel Evol. Man I. viii. 179 We assume that the germ-vesicle does not completely disappear, but that the germ-spot (nucleolus) remains and amalgamates at the moment of fertilization with the nucleus (or nucleolus ?) of the sperm-cell.

1914 Poultry Item Dec. 41/1 The nutritive material needed for the growth of the blastoderm, or germ spot, is supplied by the yolk of the egg.

1998 Colonial Waterbirds 21 348/2 Only the germ spot (blastodisc) was evident on the yolk prior to incubation.

单词	germ spot
释义	> as lemmas germ spot germ spot n. = germinal spot n. at germinal adj. Compounds. ΚΠ 1830 Edinb. New Philos. Jrnl. 9 299 In the unincubated egg of the common fowl, the cicatricula, or germ spot, lying on the surface of the yolk, is of a round form, a whitish colour, and generally about one-sixth of an inch in diameter. 1879 tr. E. Haeckel Evol. Man I. viii. 179 We assume that the germ-vesicle does not completely disappear, but that the germ-spot (nucleolus) remains and amalgamates at the moment of fertilization with the nucleus (or nucleolus ?) of the sperm-cell. 1914 Poultry Item Dec. 41/1 The nutritive material needed for the growth of the blastoderm, or germ spot, is supplied by the yolk of the egg. 1998 Colonial Waterbirds 21 348/2 Only the germ spot (blastodisc) was evident on the yolk prior to incubation. extracted from germn. < as lemmas
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> as lemmas