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n.1.(Anat.) The opening by which the two scalæ communicate at the top of the cochlea of the ear.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
At the same time, the vibration of perilymph in scala vestibuli can be transmitted to the scala tympani through helicotrema, causing the basement membrane to resonance.
In the helicotrema area of the cochlea model, an extra channel was drilled that was slightly larger (about 800 [micro]m) than the sensor tip to insert the pressure sensor.