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 …

The meaning of SOUR is being, inducing, or marked by the one of the five basic taste sensations that is produced chiefly by acids and is characteristic of lemon juice.

Oct 30, 2025 · Soursop is a sweet, creamy fruit that’s gaining buzz. Learn about the potential health benefits — and possible risks — of this tropical treat.

2 days ago · Sour is the emerging food trend of 2026, with tart ingredients showing up on restaurant menus and viral challenges.

20 hours ago · Sour flavors, once niche, emerge as one of the dominant tastes in menus and packaged foods in 2026. There’s a shift in how chefs and food brands think about flavor balance.

SOUR meaning: 1 : having an acid taste that is like the taste of a lemon tart; 2 : having the unpleasant taste or smell of food that is no longer fresh

SOUR meaning: 1. having a sharp, sometimes unpleasant, taste or smell, like a lemon, and not sweet: 2…. Learn more.

1. To make or become sour. 2. To make or become disagreeable, disillusioned, or disenchanted.

Definition of sour adjective from the Oxford Advanced Learner's Dictionary. having a taste like that of a lemon or of fruit that is not ready to eat.

Sour definition: Having a taste characteristic of that produced by acids; sharp, tart, or tangy.