• (n.) The central part of the hilum of a seed, through which the nutrient vessels pass into the rhaphe or the chalaza; -- called also omphalodium.
Om'pha·lode noun [ Omphalo- + Greek ... form.] (Botany) The central part of the hilum of a seed, through which the nutrient vessels pass into the rhaphe or the chalaza; -- called also omphalodium .