The word "splenulus" is not a commonly used term, and its spelling may be unfamiliar to many. However, by breaking down its pronunciation using IPA phonetic transcription, its unusual spelling becomes clearer. The word is pronounced /splɪˈnjuːləs/, with the stress on the second syllable. The 'spl' at the beginning represents a consonant cluster, while the 'eus' at the end indicates a suffix commonly used in scientific terms to indicate a structure or composition.
A small or rudimentary spleen; accessory spleen.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.