tetrastichiasis

tet·ra·sti·chi·a·sis

(tet'ră-sti-kī'ă-sis),
Duplication of the growth of the eyelashes (in four rows).
[tetra- + G. stichos, row]

tetrastichiasis

(tĕt″ră-stĭ-kī′ă-sĭs) [″ + stichos, row, + -iasis, condition]
A deformed fetus having four rows of eyelashes.