phenytoin

n. an anticonvulsant drug: the prototype of the hydantoins. Phenytoin is prescribed mainly for the management of partial and tonic–clonic seizures but is also used in the treatment of some cases of migraine and neuralgia. It is occasionally used to manage behavioral disturbances in children. U.S. trade name (among others): Dilantin.

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Psychology term of the day

February 23rd 2025

infrasound

n. sound whose frequency is too low to be detected by human hearing, generally encompassing the range of 20 Hz to .001 Hz. The scientific study of infrasound is known as infrasonics. Able to cover long distances and circumvent or penetrate obstacles without dispersing, infrasonic waves are used by many nonhuman animals to communicate (see infrasonic communication) and have a variety of applications in geological monitoring (e.g., prediction of volcanic eruptions, detection of earthquakes). Compare ultrasound.