rootâ² canal` ther`apy. n. 1. the branch of endodontics that treats disease of the dental pulp. 2. a treatment for such disease in which the pulp is removed and replaced by filling material.
A textphone is a device that enables phone calls to be made using text. Textphone software can be used on a computer to enable it to be used as a textphone.
A telephone developed for use by people who are deaf or hard of hearing, having a small screen and a keyboard on which a message may be typed to be received by another textphone. Example sentences. 1  A deaf person taps out their message on a textphone and the text is then read aloud by the operator to a hearing person.