B2 any basic substance that is used in or produced by a reaction involving changes to atoms or molecules: The government has pledged to reduce the amount of chemicals used in food production. Each year, factories release millions of tons of toxic (= poisonous) chemicals into the atmosphere. More examples.
Queso blanco is traditionally made from cow's milk, whereas queso fresco may be made from a combination of cow's and goat's milk. They may both be eaten straight or mixed in with various dishes. Some versions of these cheeses, such as Queso Oaxaca, melt well when heated, but most only soften.
noun, plural frescoes, frescos. 1. Also called buon fresco, true fresco. the art or technique of painting on a moist, plaster surface with colors ground up in water or a limewater mixture. Compare fresco secco. 2. a picture or design so painted. verb (used with object), frescoed, frescoing.