How Do You Spell ECHINIDA?
Pronunciation: [ˈɛt͡ʃɪnˌɪdə] (IPA) 
The correct spelling of the word "echinida" is actually "echinoida". This word refers to a class of echinoderms, or marine animals that include sea urchins, sand dollars, and sea cucumbers. The pronunciation of "echinoida" is /ɪˈkaɪnɔɪdə/ according to the International Phonetic Alphabet. The "o" in the second syllable is pronounced as a long "o" as in "home". It's important to pay attention to the correct spelling and pronunciation of words, especially in scientific and academic contexts.
