DEAF-MUTE n.
A person who is deaf and dumb; one who, through deprivation or defect of hearing, has either failed the acquire the power of speech, or has lost it. [See Illust. of Dactylology.] Deaf-mutes are still so called, even when, by artificial methods, they have been taught to speak imperfectly.
DEHISCENCE n.
A gaping or bursting open along a definite line of attachment or suture, without tearing, as in the opening of pods, or the bursting of capsules at maturity so as to emit seeds, etc.; also, the bursting open of follicles, as in the ovaries of animals, for the expulsion of their contents.