(pl. muhadditheen): scholar of the science of Hadeeth.
a scholar of hadith.
one who narrates hadith, traditions of the Holy Prophet
a scholar who transmits and/or studies hadith.
Muhaddith is an Islamic title, referring to one who profoundly knows and narrates hadiths, the chains of their narration (saneed), and the original and famous narrators. A muhaddith can tell true hadith from forgeries. A muhaddith is a person, who is mainly familiar with narration of hadith, unlike faqih, who understands the meaning of hadith and can derive rules and laws from hadith.