triplex
noun
[ ˈtrɪplɛks ]
• toughened or laminated safety glass, used especially for car windows.
• a building divided into three self-contained residences.
• a triple-stranded polynucleotide molecule.
triplex
adjective
• having three parts.
• "his vast triplex apartment"
triplex
verb
• (of electrical equipment or systems) be provided or fitted in triplicate so as to ensure reliability.
Origin:
early 17th century (as an adjective in the sense ‘threefold’): from Latin, ‘threefold’, from tri- ‘three’ + plicare ‘to fold’. Current specific senses date from the 1920s.
