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sight-read

[sahyt-reed]
verb (used with or without object), sight-read [sahyt-red] /ˈsaɪt rɛd/, sight-read·ing [sahyt-ree-ding] /ˈsaɪtˌri dɪŋ/.
  1. to read, play, or sing without previous practice, rehearsal, or study of the material to be treated: to sight-read music; to sight-read another language.

Origin of sight-read

First recorded in 1900–05
Related formssight-read·er [sahyt-ree-der] /ˈsaɪtˌri dər/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for sight-read

sight-read

verb -reads, -reading or -read (-ˌrɛd)
  1. to sing or play (music in a printed or written form) without previous preparation
Derived Formssight-reader, nounsight-reading, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012