The meaning of THICKEN is to become dense. How to use thicken in a sentence.

As branches thicken, substrate accumulates, providing more abundant and continuous water and nutrient supply for epiphytes.

When you thicken a liquid or when it thickens, it becomes stiffer and more solid. Thicken the broth with the cornflour.

THICKEN definition: to make or become thick or thicker. See examples of thicken used in a sentence.

Definition of thicken verb in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 14, 2025 · thicken (third-person singular simple present thickens, present participle thickening, simple past and past participle thickened) (transitive) To make thicker (in the sense of wider).

1. To make or become thick or thicker: Thicken the sauce with cornstarch. The crowd thickened near the doorway. 2. To make or become more intense, intricate, or complex: The leader's departure thickens …

to (cause to) become thick or thicker: [no object] When the soup thickens, shut off the heat. [~ + object] Thicken the soup by adding flour to it. to become more complicated or confusing:[no object] The plot …

To make or become thick or thicker. Thicken the sauce with cornstarch. The crowd thickened near the doorway.

To thicken means to make or become denser or more viscous, often by adding a substance like flour or cornstarch. It can also describe the process of becoming more intense or complex, as in a plot.