法性 The true, original nature of all "dharmas" (all existences/manifest phenomena). The original essence of all being; the Buddhist reality; Suchness, dharma-realm.

dharmatā. Dharma-nature, the nature underlying all thing, the bhūtatathatā, a Mahāyāna philosophical concept unknown in Hīnayāna, v. 眞如 and its various definitions in the 法相, 三論 (or法性), 華嚴, and 天台 Schools. It is discussed both in its absolute and relative senses, or static and dynamic. In the Mahāparinirvāṇa sūtra and various śāstras the term has numerous alternative forms, which may be taken as definitions, i. e. 法定 inherent dharma, or Buddha-nature; 法住 abiding dharma-nature; 法界 dharmakṣetra, realm of dharma; 法身 dharmakāya, embodiment of dharma; 實際 region of reality; 實相 reality; 空性 nature of the Void, i. e. immaterial nature; 佛性 Buddha-nature; 無相 appearance of nothingness, or immateriality; 眞如 bhūtatathatā; 如來藏 tathāgatagarbha; 平等性 universal nature; 離生性 immortal nature; 無我性 impersonal nature; 虛定界: realm of abstraction; 不虛妄性 nature of no illusion; 不變異性 immutable nature; 不思議界 realm beyond thought; 自性淸淨心 mind of absolute purity, or unsulliedness, etc. Of these the terms 眞如, 法性, and 實際 are most used by the Prajñāpāramitā sūtras.

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

 諸法的本性。這種諸法的本性，在有情方面，叫做佛性，在無情方面，即叫做法性。法性也就是實相、真如、法界、涅槃的別名。

陳義孝編, 竺摩法師鑑定, 《佛學常見辭彙》

梵語 dharmatā，巴利語 dhammatā。指諸法之真實體性。亦即宇宙一切現象所具有之真實不變之本性。又作真如法性、真法性、真性。又為真如之異稱。法性乃萬法之本，故又作法本。大智度論卷三十二即以一切法之總相、別相同歸於法性，謂諸法有各各相（即現象之差別相）與實相。所謂各各相，例如蠟炙火溶，頓失以前之相，以其為不固定者，故分別求之而不可得；不可得故空（無自性），即說空為諸法之實相。對一切差別相而言，因其自性是空，故皆為同一，稱之為「如」。一切相同歸於空，故稱空為法性。又如黃石之中具有金之性質，一切世間法中皆具涅槃之法性，故說此諸法本然之實性為法性，此與圓覺經所謂「眾生、國土同一法性」同義。釋尊曾於大寶積經卷五十二開示諸法實性之義，謂法性無有變異，無有增益，無作無不作；復於一切處通照平等，於諸平等中善住平等，不平等中善住平等，於諸平等不平等中妙善平等；又謂法性無有分別，無有所緣，於一切法能證得究竟體相。故若有依趣法性者，則諸法性無不依趣。一般對法性與如來藏加以區別，即廣指一切法之實相為法性，然亦有主張法性與如來藏同義之說。如大般若經卷五六九法性品說如來之法性與大乘止觀法門卷一等即屬此說。〔大品般若經卷二十一、菩薩地持經卷一、成唯識論卷二、大智度論卷二十八、大乘玄論卷三〕（參閱「真如」4197、「真理」4221）

佛光電子大辭典

p3358

事物的原狀，實相。

漢譯阿含經辭典，莊春江編(1.4版)

dharmatā, dharma-dhātu, dharma-svabhāva, dharma-prakṛti; dharma, dharmatva, dharma-dhātu-kriyā, dharma-dhātu-svabhāva, dharmamaya, dharma-vaṃśa, dharma-sthititā, dharma-svabhāvatā, dhātu, bhāvin, bhūtatā, sarva-dharmāṇāṃ prakṛtiḥ, sva-bhāva

佛教漢梵大辭典

P1966

成唯識論二卷四頁云：是法真理，故名法性。

朱芾煌《法相辭典》字庫