DICOTYLEDON Meaning of DICOTYLEDON in English dicotyledon BrE AmE ˌdaɪ ˌkɒt ɪ ˈliːd ə n -ə-, - ə l ˈiːd- AmE \ -ˌkɑːt̬ ə l ˈiːd ə n •ˌ•- ▷ dicotyledon|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012