Calisto

Calisto is the masculine form of Callisto, derived from the Ancient Greek name Kallisto (Καλλιστώ). The name itself comes from the Greek word 'kallistos' (κάλλιστος), meaning 'most beautiful,' which is the superlative form of 'kalos' (καλός), meaning 'beautiful.' In Greek mythology, Callisto was a nymph, daughter of Lycaon, and a companion of Artemis. She was transformed into a bear and then into the constellation Ursa Major. While the nymph Callisto is female, the masculine form Calisto has been used historically, though less commonly.

The name has seen occasional use throughout history, particularly in regions influenced by classical Greek culture. Its rarity in modern times gives it an exotic and distinctive feel. The association with beauty and classical mythology lends it a sophisticated and timeless quality.