The word "ACTRM" is a bit tricky to spell because it's actually an acronym. Each letter stands for a word or phrase that forms a larger meaning or concept. In terms of phonetics, this word would be transcribed as /æk.trəm/. The "a" sound is pronounced as in "cat," the "k" sound is pronounced as in "kite," the "t" sound is pronounced as in "tea," the "r" sound is pronounced as in "red," and the "m" sound is pronounced as in "mom." Practice spelling and pronouncing "ACTRM" to master this acronym.