From Longman Dictionary of Contemporary Englishsight-readsight-read /ˈsaɪtriːd/ verb (past tense and past participle sight-read /-red/) [intransitive, transitive] APMto play or sing written music when you look at it for the first time, without practising it first —sight-reader noun [countable] —sight-reading noun [uncountable]→ See Verb table
Examples from the Corpus
sight-read• Just like Thomas, I could sight-read anything she threw at me.• He could sight-read anything without the slightest difficulty, and he immediately understood what was going on. 