from The Century Dictionary and Cyclopedia
- n. The clonic spasm of the calf-muscles evoked in certain cases by a sudden bending of the foot upward toward the ankle, to such an extent as to render the tendon of Achilles very tense.
Sorry, no etymologies found.
The circumference of the head was 19 inches, and Ross pointed out that the tendon-reflexes were well marked, as well as the ankle-clonus; he diagnosed the case as one of parencephalus.
Knee-jerks and muscle-jerks increased, especially on left; ankle-clonus; very slight loss of touch-acuity in lower half of body.