The spelling of the word "APOCRUSTICK" can be a bit tricky to decipher. Using IPA phonetic transcription, the word is pronounced as /əˈpɒkrəstɪk/. The first syllable "ap" is pronounced with a schwa sound, followed by the stressed syllable "cru" pronounced as kru. The final syllable "stic" is pronounced as stik. This word refers to a method of measurement used in geometry, where excess length is removed from a shape. Remembering the spelling may take some practice, but the phonetic transcription can help with pronunciation.