- Original: Δίδυμος - Transliteration: Didumos - Phonetic: did'-oo-mos - Definition: Didymus = two fold or twain 1. a surname for the apostle Thomas - Origin: prolongation from G1364 - TDNT entry: None - Part(s) of speech: Noun Masculine - Strong's: Prolonged from G1364 ; double that is twin; Didymus a Christian: - Didymus. Total KJV Occurrences: 3 • Didymus, 3 Joh 11:16; Joh 20:24; Joh 21:2