The word "ECASEX" is an uncommon term with an unusual spelling. It is pronounced /ɛkəsɛks/. The first syllable "ECA" is pronounced with a short "e" sound as in "pet" followed by a "k" sound. The second syllable "SEX" is pronounced with a short "e" sound as in "pet" followed by a "s" sound and then the vowel "e" as in "hey". The final "x" is silent. The meaning of this word is not clear and further context is needed to properly understand its usage.