Regressive
Chamber's Etymological of the English Language · 1895 · p. 436
re-gres'iv, adj., going back: returning.
Bu kavram başka kaynaklarda da geçiyor
Appleton's Medical Dictionary (1913)
The American Illustrated Medical Dictionary (1913)
The American Dictionary and Cyclopedia (1910)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The Student's Medical Dictionary (1896)
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