IPA: //ˈændʒioʊˌspɜrm//
KK: /ˈæn.dʒi.oʊ.spɜrm/
A type of plant that produces flowers and has seeds enclosed in a protective structure called an ovary.
Roses and daisies are examples of angiosperms that bloom in the spring.
Angiosperm is formed from "angeion" (meaning vessel) and "sperma" (meaning seed). The term refers to plants that have seeds enclosed within a vessel, specifically the fruit.
Think of 'vessel' ('angeion') that holds 'seeds' ('sperma') — that's why angiosperms are plants with seeds enclosed in a fruit.