orthoptic circle

== English == === Pronunciation === enPR: ôr-thŏp′tĭk sûr′kəl (Received Pronunciation) IPA(key): /ɔːˌθɒp.tɪk ˈsɜː.kəl/ (General American) IPA(key): (without the cot–caught merger) /oɹˌθɔp.tɪk ˈsɜɹ.kəl/, (cot–caught merger) /oɹˌθɑp.tɪk ˈsɜɹ.kəl/ (Canada) IPA(key): (standard) /oɹˌθɒp.tɪk ˈsɜɹ.kəl/, (dialectal) /oɹˌθɑp.tɪk ˈsɜɹ.kəl/ (Australian) IPA(key): /oːˌθɔp.tɪk ˈsɜː.kəl/ (New Zealand) IPA(key): /oːˌθɒp.tək ˈsøː.kəl/ (Scotland) IPA(key): /ɔɾˌθɔp.tɪk ˈsɪɾ.kəl/, /ɔɾˌθɔp.tɪk ˈsɪɾ.kʌl/ (India) IPA(key): /ɔː(ɾ)ˌt̪ɔp.ʈɪk ˈsɜː(ɾ).kel/, /ɔː(ɾ)ˌt̪ɔp.ʈɪk ˈsər.kel/ Hyphenation: or‧thop‧tic cir‧cle === Noun === orthoptic circle (plural orthoptic circles) (geometry) Synonym of director circle. ==== Translations ====