EXCHANGE n.
fall of exchange that is affected by the demand and supply. Exchange is at par when, for example, a bill in New York, for the payment of one hundred pounds sterling in London, can be purchased for the sum. Exchange is in favor of a place when it can be purchased there at or above par. -- Telephone exchange, a central…
FERMENT n.
n and precipitated by alcohol. In action they are catalytic and, mainly, hydrolytic. Good examples are pepsin of the dastric juice, ptyalin of the salvia, and disease of malt. globular proteins, capable of catalyzing a wide variety of chemical reactions, not merely hydrolytic. The full set of enzymes causing production…
HOLD v.
To exhibit; to display; as, he was held up as an example. (d) To rein in; to check; to halt; as, hold up your horses. -- To hold water. (a) Literally, to retain water without leaking; hence (Fig.), to be whole, sound, consistent, without gaps or holes; -- commonly used in a negative sense; as, his statements will not…