— cotyledonal, cotyledonary /kot'l eed"n er'ee/ , cotyledonous , adj.
/kot'l eed"n/ , n. Bot.
1. the primary or rudimentary leaf of the embryo of seed plants.
2. Anat. any of several lobules of the placenta.
[ 1535-45; kotyledón a plant (prob. navelwort), lit., a cuplike hollow, deriv. of kotýle cup ]