IPA: //dʒɪm.nəʊˈspɜː.məs//
KK: /dʒɪmnoʊˈspɜrməs/
Relating to a type of plant that produces seeds that are not enclosed in an ovary or fruit.
Pine trees are examples of gymnospermous plants that produce cones instead of flowers.
Gymnospermous → It is formed from "gymnos" (from Greek 'γυμνός', meaning naked) and "sperma" (from Greek 'σπέρμα', meaning seed). The word describes plants that have naked seeds, not enclosed in an ovary.
Think of 'naked' ('gymnos') seeds that are not covered ('sperma') — that's what gymnospermous plants are.