duplex

adj

1. (not-comparable)Double; made up of two parts.
2. (not-comparable)Double; made up of two parts.
3. (not-comparable)Double; made up of two parts.

   “Duplex stainless steels have been classified according to the first period (1930–1960) and second period (1960–1990). The designations for these duplex alloys in the United States have been primarily according to Unified Numbering System (UNS) numbers in the S3xxx.x series.”

4. (not-comparable)Bidirectional (in two directions).

   “duplex telegraphy”

5. (not-comparable)Having horizons with contrasting textures.

   “Soils are duplex, sandy and solodic. The dominant trees are the stringybark eucalypts […]”

noun

1. (Australia, Canada, US)A house made up of two dwelling units.

   “The house had been renovated into a duplex and he’d put in a phone line.”

2. (US)A dwelling unit with two floors.
3. A cancellation combining a numerical cancellation with a second mark showing time, date, and place of posting.
4. A throwing motion where two balls are thrown with one hand at the same time.
5. A double-stranded polynucleotide.
6. A system of multiple thrust faults bounded above and below by a roof thrust and floor thrust.

   “In contrast, the folds in the overlying lithotectonic unit 4 are larger and are cut by a series of faults in a duplex.”

   “It has been noted, using a combination of surface geologic and seismic reflection data, that a duplex, although formed in response to movement of a thrust sheet, frequently arches the thrust sheet as the duplex is built by duplication of rocks beneath it […]”

verb

1. To make duplex.
2. To make into a duplex.
3. To make a series of duplex throws.