"With 31 votes in favor, 38 votes against and two abstentions, the project of voluntary termination of pregnancy is rejected," the upper house said on Twitter.
In June, the document was approved by the parliament's lower chamber by a slight majority 129-125 with one abstention.
In Latin America, abortions are only fully legal in Uruguay, Cuba, and Guyana, as well as in Puerto Rico. In Mexico, the voluntary termination of pregnancy is possible in the country's capital. Most Latin American countries also allow abortions only for medical reasons. Abortion is totally banned in Chile, Suriname, El Salvador, Haiti, Honduras, Nicaragua and the Dominican Republic.