I. ˈsər-k ə m-ˌfleks adjective
Etymology: Latin circumflexus, past participle of circumflectere to bend around, mark with a circumflex, from circum- + flectere to bend
Date: circa 1577
1. : characterized by the pitch, quantity, or quality indicated by a circumflex
2. : marked with a circumflex
II. noun
Date: 1609
: a mark ˆ, ῀, or ˜ originally used in Greek over long vowels to indicate a rising-falling tone and in other languages to mark length, contraction, or a particular vowel quality