"Lammert" is a Dutch surname that is spelled as /ˈlɑmərt/ in IPA transcription. In Dutch, "lam" means "lamb" and "bert" means "bright." The spelling of "lammert" follows the Dutch phonetic rules where the letter combination "mm" is used to represent the /m/ sound. The letter "e" after the double consonant indicates a short vowel sound, while the final "t" is silent. The IPA phonetic transcription breaks down the pronunciation of "lammert" into individual sounds, making it easier to understand the spelling of the word.