-syon

• -siyon — following consonants
• -asyon

Borrowed from Spanish -ción.

• IPA^(key): /ˈsjon/, [ˈʃon]

-syon (noun-forming suffix, Baybayin spelling ᜐ᜔ᜌᜓᜈ᜔)

1. Alternative form of -asyon (used after vowels): -tion

• Usually pronounced similarly to the Spanish, with some rare exceptions.
• Rarely used to form authentic words, except for surface analysis of existing words, or as replacement of English -tion.

• Tagalog terms suffixed with -syon

• -siyon

From Ottoman Turkish ـسیون (-syon, -siyon), from French -tion, from Latin -tiō.

• IPA^(key): /sjɔn/

-syon

1. Used to respell loanwords which would originally end with the suffix -tion, rarely used to form authentic words