PLANULA
An Illustrated Encyclopedic Medical Dictionary · 1894 · p. 12
(Lat.), n. f. Pla!>n(pla!ln)'ual(u<l)-a. Dim. of planum, a plane. The locomotory ciliated embryo of Ccelenterata. [B, 28 (a, 27); L, 193.] [s. 283]
Bu kavram başka kaynaklarda da geçiyor
Stedman's Medical Dictionary: A Practical Medical Dictionary (1920)
The American Illustrated Medical Dictionary (1913)
Chamber's Twientieth Century Dictionary (1908)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The American Dictionary and Cyclopedia
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