Catechism of the Catholic Church §187 — excerpt
Such syntheses are called "professions of faith" since they summarize the faith that Christians profess. They are called "creeds" on account of what is usually their first word in Latin: credo ("I believe").
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.