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Definition of Hydrographical
1. Adjective. Of or relating to the science of hydrography. 
Medical Definition of Hydrographical
1. Of or relating to hydrography. Source: Websters Dictionary (01 Mar 1998)
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1. Adjective. Of or relating to the science of hydrography. 
1. Of or relating to hydrography. Source: Websters Dictionary (01 Mar 1998)