लुमेन (Lumen) - Meaning in English: Meaning of लुमेन (Lumen) in English, What is the meaning of Lumen in English Dictionary. Pronunciation, synonyms, antonyms, sentence usage and definition of लुमेन . Lumen meaning, pronunciation, definition, synonyms and antonyms in English. लुमेन (Lumen) ka angrezi mein matalab arth aur proyog
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