PIE base ‘all’, with derivatives found only in Greek and Tocharian. See also al-³ ‘all’.
Other derivatives include panorama, panacea, pandemic, pantheism, and Pandora ‘all-gifted’, cognate with donor and data.
[Pokorny *k̂eu-1, k̂eu̯ə- : k̂ū-, k̂u̯ā- ‘to swell’, pp. 592–594]