Please explain the meaning and description of ‘OM’

Before all the physical creations came into existence, it is the sound that came first. The primordial sound is the sound of ‘Om’. In general, this ‘shabdha’ signifies welcoming God. It has three syllables – ‘A’ ‘U’ and ‘M’. When the first syllable ‘A’ is pronounced, one has to open his mouth fully. This represents creation. The second syllable ‘U’ represents sustenance or protection. The third syllable ‘M’ (pronouncing which the lips get closed) represents ‘laya’ or dissolution.

This is also called the ‘Pranava Mantra’. Yogis have this ‘dhwani’ (sound) resonating in their body. This is known as ‘anaahatam’.