"Diploplacula" is a rarely used medical term that refers to the presence of two pupils in each eye. Its spelling can be explained using the International Phonetic Alphabet (IPA). The first syllable is pronounced "dɪploʊ", rhyming with "hippo". The second syllable is "plə", rhyming with "butter". The final syllable is "kjuːlə", which is pronounced like "cooler" but with an "l" sound instead of "r". This unique spelling highlights the complexity and specificity of medical terminology.