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Conch ( or sometimes )〔(§ 51. conch.no 7. Pronunciation Challenges. The American Heritage Book of English Usage. 1996 )〕 is a common name that is applied to a number of different medium to large-sized sea snails or their shells. The term generally applies to large sea snails whose shell has a high spire and a noticeable siphonal canal (in other words, the shell comes to a point at both ends). True conchs are marine gastropod molluscs in the family Strombidae, specifically in the genus ''Strombus'' and other closely related genera such as ''Eustrombus''. Many species also are often called "conch", but are not in the family Strombidae, including ''Melongena'' species (family Melongenidae), and the horse conch ''Pleuroploca gigantea'' (family Fasciolariidae). They also include the sacred chank or more correctly shankha shell (''Turbinella pyrum'') and other ''Turbinella'' species in the family Turbinellidae. ==Etymology== The original word is from Sanskrit ''shankha''. When the Portuguese first encountered India in the Bengal region and the western coast, the local dialects had an "o" pronunciation for the middle "a" and a softening of the initial "sh" and final "kh". The word was pronounced locally as "sonka" which in Portuguese was transliterated as "çoncha" (with very similar pronunciation as "sonka") and alternatively without the final "a". The English word is a spelling pronunciation of the Portuguese word. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「conch」の詳細全文を読む スポンサード リンク
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