Thymelcosis is a word that refers to a condition caused by the ingestion of the plant Thymelaea hirsuta. The spelling of this word can be explained using IPA phonetic transcription: /θaɪˌmɛlkəʊsɪs/. The "th" at the beginning is pronounced as a voiceless dental fricative, while the "y" in the middle is pronounced as a diphthong made up of a short "a" sound and a schwa. The stressed syllable is indicated by the apostrophe, and the final "s" is pronounced as a voiceless alveolar fricative. Overall, the spelling of thymelcosis reflects its Greek origins and scientific context.
Suppuration of the thymus gland.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.