noun Download 🔗Share The twenty-third letter of Classical and Modern Greek and the twenty-fifth letter of Old and Ancient Greek. Examples : "In Greek alphabet exercises, students learn that psi comes after chi. " language writing word sign character phonetics linguistics Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A form of psychic energy. Examples : "The character in the movie could move objects with just his mind, suggesting he had a powerful amount of psi. " energy mind supernatural science Chat with AIVocabulary GamePractice Reading
