Webster’s Revised Unabridged Dictionary · 1913 Preoblongata Pre·ob′lon·ga′ta (·ŏb′lŏn·gā′tȧ), n. [NL. See Pre-, and Oblongata.] (Anat.) The anterior part of the medulla oblongata. B. G. Wilder. ‹ Prenuncious Preobtain ›