Consort of Lord Shiva is mostly known by her name 'Parvati'. But in Vedas, Upanishads, and Puranas we find the name of 'Uma' being used. Right from the 5th Anuvaka of Sri Rudram which starts with 'नमः सोमाय च' or 'Salutations to Lord who is with Uma', to the Taittariya Aranyaka of the Yajurveda which states:
अम्बिकापतये उमापतये पशुपतये नमो नमः ॥ १॥ [YajurVeda T.A. 10.22.1]
Salutations and Salutations to Ambikapati, Umapati, and Pasupati.
In the Kaivalya Upanishad too we find:
उमासहायं परमेश्वरं प्रभुं त्रिलोचनं नीलकण्ठं प्रशान्तम् ।
Meditating on three-eyed blue-necked Parameshwara who is with Uma
In the Kena Upanishad too she is referred by the name Uma:
उमां हैमवतीं ताँहोवाच (Kena Upanishad 3.12)
Uma, the daughter of the Himalayas spoke
Not only this, In the Valmiki Ramayana also, she is referred by the name Uma:
तस्यां गंगेयमभवज्ज्येष्ठा हिमवतः सुता |
उमा नाम द्वितीयाभूत्कन्या तस्यैव राघव || १-३५-१६
This Ganga has emerged as an elder daughter to Himavan through Mena, oh, Raghava, and that way a girl renowned by the name Uma has become a second daughter to him.
In the Mahabharata too she is mostly referred to by the name Uma. The Shiva Purana itself is divided into several Samhitas and one of which is 'Uma Samhita' (and not Parvati Samhita).
Since the Vedas, Upanishads, Itihasas, and Puranas are calling her by the name Uma, there should be a significant meaning of the name Uma. What is the meaning of Uma? How is this word derived? 'Om' is formed of the letters 'A', 'U', 'M', and Uma is formed of the letters 'U', 'M', 'A'. So, does the name 'Uma' represents the Pranava (Om) itself? Do scriptures mention that 'Uma' name is Pranava swarupa?