About
The character "坳" is structured as a phono-semantic compound, combining the earth radical "土" to signify its relation to terrain with the component "幼" which primarily indicates its pronunciation. Etymologically, it derives from representing a word for a depression or hollow in the ground, and this core meaning has persisted without substantial alteration. Its usage in written Chinese consistently denotes topographic concavities such as valleys or dips, and the character's form has maintained this composition throughout its documented history.