1Consisting of or occurring in a number of separate stages.
- ‘The Arunta Inlier is an extensive east-west-trending, polyphase, high-grade, predominantly Palaeoproterozoic metamorphic complex.’
- ‘New palaeomagnetic data from Lower Carboniferous granitoids of the orogenic root of the eastern Variscan belt show a polyphase palaeomagnetic record.’
- ‘Precambrian metamorphism and migmatization and the wide spectrum of mainly Alpine mica ages provide clear evidence for such a polyphase geological history.’
- ‘The Moine rocks widely record polyphase deformation and metamorphism up to amphibolite facies.’
- ‘The polyphase tectonic and sedimentological development of East African continental rift basins is well-illustrated in the Kilombero Rift Valley in Tanzania.’
- 1.1 (of an electrical device or circuit) designed to supply or use simultaneously several alternating currents of the same voltage and frequency but with different phases.
- ‘The reduction in the die area dedicated to capacitance opens up the possibility of building more complex RF circuits, such as image-reject mixers and polyphase IF filters.’
- ‘The Energy Policy Act of 1992 required minimum efficiency standards for general purpose, polyphase induction motors.’
- ‘In contrast to direct current (which was difficult to transmit more than ten miles), polyphase AC systems proved capable of transmitting power hundreds of miles.’
We take a look at several popular, though confusing, punctuation marks.