Phonology (noun)

The study of the sounds used in speech, including the study of the sound system of a particular language and the rules for combining sounds.

Origin:

From the greek φωνή (phōnē) meaning "sound" and -logy meaning "study of".

Examples:

1. Phonology is an important part of linguistics.
2. Phonology is concerned with the patterns of sounds in a language.
3. Phonology includes the study of phonemes, the smallest units of sound in a language.
4. Phonology also includes the study of sound change over time in a language.
5. Phonology is used in speech therapy to help people with speech disorders.