PLANO-CONCAVE Meaning of PLANO-CONCAVE in English plano-concave BrE AmE ˌpleɪn əʊ ˈkɒn keɪv ◂ ⇨-ˈkɒŋ-, ˌ•••ˈ• AmE \ -oʊ ˈkɑːn- Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012