The word "neoteinic" is typically spelled with the prefix "neo-" meaning new or recent, and suffix "-teine" meaning a group of organic compounds with a similar structure. The word is used in the field of biology to describe animals that exhibit juvenile characteristics well into adulthood, such as neotenic salamanders that retain their gills throughout their lifespan. The pronunciation of "neoteinic" is /niːəʊtiːnɪk/, with emphasis on the first syllable and a long "e" sound in the prefix.