test-types

Black letters of various sizes printed on a card, used to test the acuity of vision; see Jaeger and Snellen. with gastric disorder affecting the muscles of the extremities and of respiration t. epidem'ica, t. rheumatic a. t. parathyreopri'va, tetany following excision of the parathyroid glands, rheum at'ica, an acute epidemic form of tetany, of several weeks' duration, occurring chiefly in winter.