echo me try

[Eng.echo meter; -y.] 1. Arch .: The art or science of constructing vaults so as to produce echoes. 2. Music : The art, science, or act of measuring the duration of sounds. ěch-ō-phot-o-nỹ, s . [Gr. ēchō echo; phōs = light; tonos tone.] The production of the sensation of color by the stimulus of sound waves. ěch-u-ja. s. An extremely poisonous plant of Africa, Adenium bæhmianum.