The word "Lactumen" is not a commonly used term. However, in terms of spelling, it can be broken down into three syllables: lac-tu-men. The first syllable "lac" is pronounced as /læk/ with the "a" sound as in "cat". The second syllable "tu" is pronounced as /tuː/ with the "u" sound as in "too". Finally, the third syllable "men" is pronounced as /men/ with the "e" sound as in "men" or "pen". This phonetic transcription helps to clarify the correct pronunciation of the word "Lactumen".