Name Tomonaga Type Surname Usage Japanese Scripts 朝長, 朝永(Japanese Kanji) Pronounced Pron. /to̞.mo̞.nä.ɡä/ Edit Status Status Meaning & History From Japanese 朝 (tomo) meaning "morning, epoch, period" and 長 (naga) meaning "long" or 永 (naga) meaning "eternity".
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