Fricatives are sounds associated with letters such as f, s; v, z, where air passes through narrow constriction – turbulently creating noisy sound.

of sublunar tropical reef fish.

Two articulators close together. Interval notation cull elements of a set. The "Y", where I and I converge.

sentient against inner curvature of molar arc.

This – turbulent – airflow – is – called – frication.