"Variant of Atanasio"
The name Atanacio is commonly a male name from the "Spanish" origin.
Atanacio is a Spanish-language variant of Atanasio, the Spanish form of the Greek name Athanasios. That Greek name is built from the negative prefix a- and thanatos, the word for death, so its literal sense is "immortal". The Greek name is the one carried by Athanasius of Alexandria, the fourth-century bishop. The spelling Atanacio appears in Spanish-speaking communities and is first recorded in United States birth records in 1916.
Atanasio means "Cognate of the Greek Athanasios, which is from the Greek athanasia immortality".
The pronunciation of Atanacio is ah-tah-NAH-see-oh.