Definition of methenamine in English:

methenamine

Pronunciation /mɪˈθiːnəmiːn/ /mɪˈθiːnəmɪn/

noun

  • 1Pharmacology
    The compound hexamethylenetetramine, (CH ₂) ₆ N ₄, or a derivative of this (often with mandelic acid), especially when used as a urinary antiseptic.

  • 2Pathology
    In full "methenamine silver". A solution of methenamine and silver nitrate, used in several histological stains.

Origin

1920s; earliest use found in Pharmacopeia United States. From methene + amine.