IPA: /ˈɛndəʊspɜːm/
KK: /ˈɛndəˌspɜrm/
A type of tissue found in seeds of flowering plants that provides nourishment to the developing embryo.
The endosperm is crucial for the growth of the seedling after germination.
Endosperm → It is formed from "endo-" (from Greek "endon", meaning within) and "sperma" (from Greek, meaning seed). The word "endosperm" refers to the tissue within a seed that provides nourishment to the developing plant embryo.
Think of something that is 'within' ('endo-') a 'seed' ('sperma') — that's why endosperm is the nourishing part found inside a seed.