Definition of "underseas" [underseas]

• Under the surface of the sea or ocean, underwater. (adverb)

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• "U, representing the word "underseas," coupled with the numeral denoting the number of the boat."
• "One can scarcely think of the terrible conflict without bringing to mind the wonderful "underseas" boat which has made infamous Germany famous."
• "Japan's disrupted supply networks are causing concerns about component costs and product shortages that global technology companies may face; while Internet users in Hong Kong may experience slow Internet speeds for several weeks due to damaged underseas cables."