Which Purāṇas define the word "purāṇa" within their text?

Question

From the sample page of this book:

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Questions:

1. Which all Purāṇas define the word 'purāṇa' within their text?
2. Can you cite the exact verses (and their translation) from each of the Purāṇas that give such a definition?

Answer 1

Etymology of the word "purāṇa" is mentioned Part 1 Prakriya Pada Chapter 1 of Vayu Purana.

यस्मात्पुरा ह्यनतीदं¹ पुराणं तेन तत्स्मृतम्।
निरुक्तमस्य यो वेद सर्वपापैः प्रमुच्यते।।२०३।।

This is called Purana because it breathes (exists) from earliest times. The etymology of this one (i.e. Purána) who knows, he gets rid of all the sins.

Foootnotes say

1. ह्यनती = हि + अनति - from root अन to breathe, Vedic variant of अनिति clasical. A practical Vedic dictionary by Dr. Surya Kanta, p. 27. Oxford University Press, Delhi 1981.

_{This answer will be updated with other references shortly}.

Answer 2

Not exactly an answer because you asked references and definition specifically from the Puranas only.

Anyways,why the Puranas are so-called is stated symbolically in the KulArnava TantrA as follows:

Punya PApAdi KathanaAd RAkshashA DinibAranAt| NavabhaktyAdi JananAt PurAn Iti Kathyate|(KulArnava TantrA ,17.39)

Because it tells of merit and demerit, Punyapapa, because it dispels evil beings like Raksasas, and because it generates ninefold devotion, Navabhakti, and the like, it is called Purana.