BIFOCAL
An Illustrated Encyclopedic Medical Dictionary · 1894 · p. 35
adj. Bi-fo'k'l. Having two foci; said of lenses. [L.] [s. 760]
Bu kavram başka kaynaklarda da geçiyor
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The Optical Dictionary (1904)
The Student's Medical Dictionary (1896)
Readham'da tam maddeyi gor →