Wiktionary
buddha-nature
n. (context Buddhism English) The potential of achieving the nature of the Buddha through study and religious practice
Wikipedia
Buddha-nature
Buddha-nature or Buddha Principle refers to several related terms, most notably tathāgatagarbha and buddhadhātu. Tathāgatagarbha means "the womb" or "embryo" (garbha) of the "thus-gone" (tathagata), or "containing a tathagata", while buddhadhātu literally means "Buddha-realm" or "Buddha-substrate".
Usage examples of "buddha-nature".
If there is indeed Buddha-nature, it would not leave itself without a witness in other cultures, other places, others times: and in the ears of sensitive men and women, it seems to have whispered the equivalent of "Mahatman" much more often than "anatman.