The word "spleniculus" refers to a small splenic artery. The IPA phonetic transcription of the spelling is /spliːnɪkjʊləs/. The first syllable "spli-" is pronounced with a long "i" sound /aɪ/, followed by the /n/ sound. The second syllable "-ni-" is pronounced with a short "i" sound /ɪ/, followed by the /k/ and /j/ sounds. The final syllable "-culus" is pronounced with a short "u" sound /ʊ/, and the stress is placed on the second syllable.
Splenculus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.