Pantaleon

Actually, παντός (pantos) is the genitive of Greek πᾶς (pas) meaning "all, every, each":

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• https://en.wiktionary.org/wiki/%CF%80%CE%B1%CE%BD%CF%84%CF%8C%CF%82#Ancient_Greek (in English)

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πᾶν (pan) is only the neuter singular of the latter:

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• https://en.wiktionary.org/wiki/%CF%80%E1%BE%B6%CE%BD#Ancient_Greek (in English)

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Also see:
- the entry for Pantaleon at Pavlos' Etymologica: http://web.archive.org/web/20120325073651/http://www.etymologica.com/page21.htm (in English)
- πᾶς (pas) meaning "all, every, each":
• http://www.perseus.tufts.edu/hopper/morph?l=pa%3Ds&la=greek&can=pa%3Ds (in English)
• https://en.wiktionary.org/wiki/%CF%80%E1%BE%B6%CF%82#Ancient_Greek (in English)
• https://lsj.gr/wiki/%CF%80%E1%BE%B6%CF%82 (in English)

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This comment also applies to the entry for Panteleimon in the main database, which contains the same mistake.

The actual meaning of the name means all compassionate and not all lion.