Sour Apple

Sourness

Sourness, also known as sour, is a basic taste sensation perceived through hydrogen ions from acidic compounds interacting with taste bud receptors, and it can also refer to an unpleasant or acidic quality in taste, disposition, or tone. It is a warning sign for potentially spoiled food, though it is balanced in some food products by sweetness, and it is associated with a low pH.

Apple

An apple is the round, edible fruit of an apple tree. Fruit trees of the orchard or domestic apple, the most widely grown in the genus, are cultivated worldwide. The tree originated in Central Asia, where its wild ancestor, Malus sieversii, is still found. Apples have been grown for thousands of years in Eurasia before they were introduced to the American continent by European colonists. Apples have cultural significance in many mythologies and religions.

sour

Adjective

1. Tasting of acidity.
2. Made rancid by fermentation, etc.

Noun

1. The sensation of a sour taste.
2. A drink made with whiskey, lemon or lime juice and sugar.

apple

Noun

1. A common, firm, round fruit produced by a tree of the genus Malus.
2. The fruit of the tree Malus domestica, chiefly with a green, red, or yellow skin, cultivated in temperate climates for cidermaking, cooking, and eating. .mw-parser-output .defdate{font-size:smaller}

Verb

1. To make (something) appear like an apple (noun sense 1.1).
2. To become like an apple.