The word "NGFBETA" is a term used in biology to refer to a type of nerve growth factor. Its spelling may seem confusing, but it can be broken down into its individual phonemes. "NG" represents the velar nasal sound /ŋ/ which is common in English words such as "sing" and "long". "F" represents the voiceless labiodental fricative /f/. "BETA" is pronounced with a voiced bilabial stop /b/ followed by the diphthong /eɪ/. Therefore, the correct pronunciation of "NGFBETA" is /ɛn-ji-ɛf-biː-tə/.