In Nāgārjuna's Madhyamaka, emptiness means that phenomena lack an independent, unchanging intrinsic nature (svabhāva).
Open evidence for this scene
This sentence is an editorial paraphrase linked to the listed sources, not a direct quotation.
Nāgārjuna
Stanford Encyclopedia of Philosophy
Locator: §2.1 Svabhāva and §2.2 Emptiness
Open source