Noun
The act of secreting or concealing; as, the secretion of dutiable goods.
The act of secreting; the process by which material is separated from the blood through the agency of the cells of the various glands and elaborated by the cells into new substances so as to form the various secretions, as the saliva, bile, and other digestive fluids. The process varies in the different glands, and hence are formed the various secretions.
Any substance or fluid secreted, or elaborated and emitted, as the gastric juice.
Source: Webster's dictionaryWrongly do the Greeks suppose that aught begins or ceases to be; for nothing comes into being or is destroyed; but all is an aggregation or secretion of preexisting things; so that all becoming might more correctly be called becoming mixed, and all corruption, becoming separate. Anaxagoras
Edible substances evoke the secretion of thick, concentrated saliva. Why? The answer, obviously, is that this enables the mass of food to pass smoothly through the tube leading from the mouth into the stomach. Ivan Pavlov
UNDERSTANDING, n. A cerebral secretion that enables one having it to know a house from a horse by the roof on the house. Its nature and laws have been exhaustively expounded by Locke, who rode a house, and Kant, who lived in a horse. Ambrose Bierce
A by-product of the trade in beaver pelts was castoreum —the secretion of the animals' anal glands—which was used for its medicinal properties and for perfumes. Source: Internet
A. baumannii has been reported to commence secretion of exopolysaccharides once it has successfully adhered to a surface, be it hydrophilic or hydrophobic like glass or plastic, respectively, or surfaces of living cells. Source: Internet
Adult wasps attempt to remove and kill moth eggs and larvae by chewing down the edges of cells, coating the cells with an oral secretion that gives the nest a dark brownish appearance. Source: Internet