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We found 10 dictionaries with English definitions that include the word mactra: Click on the first link on a line below to go directly to a page where "mactra" is defined. General (9 matching dictionaries) mactra: Wordnik [home, info] mactra: Wiktionary [home, info] Mactra, mactra: Dictionary.com [home, info] Mactra: Wikipedia, the Free Encyclopedia [home, info] Mactra: Online Plain Text English Dictionary [home, info] mactra: Webster's Revised Unabridged, 1913 Edition [home, info] Mactra: AllWords.com Multi-Lingual Dictionary [home, info] mactra: Free Dictionary [home, info] Mactra: Dictionary/thesaurus [home, info] Medicine (1 matching dictionary) mactra: online medical dictionary [home, info]

Quick definitions (mactra) (n.) Any marine bivalve shell of the genus Mactra, and allied genera. Many species are known. Some of them are used as food, as Mactra stultorum, of Europe. See Surf clam, under Surf. (This definition is from the 1913 Webster's Dictionary and may be outdated.)