[ 'dju:plɛks ]
■ noun
1》 N. Amer. a residential building divided into two apartments.
↘a flat on two floors.
↘ chiefly N. Amer. & Austral. a semi-detached house.
2》 Biochemistry a double-stranded polynucleotide molecule.
■ adjective
1》 having two parts.
2》 (of a printer) capable of printing on both sides of the paper.
3》 allowing the transmission of two signals simultaneously in opposite directions.
Origin
C16 (as adjective): from L. ~, duplic- , from duo 'two' + plicare 'to fold'.