sə̇ˈdilə, sēˈ- noun
( -s )
Etymology: Spanish, the obsolete letter ç (actually a medieval form of the letter z ), cedilla, from diminutive of ceda, zeda the letter z, from Late Latin zeta — more at zed
: a mark or diacritic, placed under a letter or symbol to indicate a sound different from that which the unmodified character bears in certain or all situations (as under c in French and in Portuguese before a, o, or u to indicate a pronunciation s rather than k)