verb (used with or without object), sight-read [sahyt-red] /ˈsaɪt rɛd/, sight-read·ing [sahyt-ree-ding] /ˈsaɪtˌri dɪŋ/.
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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
verb -reads, -reading or -read (-ˌrɛd)
to sing or play (music in a printed or written form) without previous preparation
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