不生不滅的意思，也是涅槃的道理。

陳義孝編, 竺摩法師鑑定, 《佛學常見辭彙》

Not born, without being born or produced; uncreated; no rebirth; immoral; nirvāṇa as not subject to birth and death, or reincarnation, and which negates them; the condition of the absolute.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

(anutpanna, ajāti). (1) unborn, not produced or arisen, Since the original quality of all things is emptiness, there actually is no such thing as arising, changing and ceasing. Therefore the term is equivalent to 'emptiness.' (2) The transcendence of the world of delusion. The absolute--principle separated from arising and cessation. (3) 'Arhat', or 'nirvāna.' The condition of cessation of all defilements. (4) Death.

anutpāda, anutpatti, ajāti; ajanita, ajanmatva, ajanman, ajāta, ajātaka, ajātatva, ajātika, ajānaka, anabhinirvṛttatva, anutpattika, anutpattimat, anutpanna, anutpannatva, anutpādana, anutpāda-mati, anutpādikā, anupapatti, anupāda, aprādurbhāva, asaṃbhūta, asaṃbhūtatva, janmābhāva, nōtpatti.

佛教漢梵大辭典

P2153

瑜伽八十七卷九頁云：於後有，無復更生；說名無生。

二解　集論五卷十五頁云：何故此滅復名無生？離續生故。

朱芾煌《法相辭典》字庫