n.1.The first rudiments of an embryo in generation.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Therefore, Harvey conceived development as a gradual process of generation and growth starting from a homogeneous substance and driven by a plastic power: "In the egg then, as we have said, there is no distinct part or prepared matter present, from which the foetus is formed; but in the same way as the apex or gemmule protrudes in a seed; so in the egg, there is a macula or cicatricula, which endowed with plastic power, grows into the eye of the egg and the colliquament, from which and in which the primordial or rudimentary parts of the chick, the blood, to wit, and the punctum saliens are engendered, nourished, and augmented, until the perfect chick is developed" (Harvey, 1847, p.