"Tympanophora" is a rare scientific term that refers to a group of plant species. The word consists of four syllables with stress on the second and fourth syllable. It is spelled as /tɪmˌpænəˈfɔːrə/ using the International Phonetic Alphabet (IPA). The first syllable "tym" is pronounced with the vowel sound /ɪ/ as in "him". The second syllable "pa" is pronounced as /ˌpæ/ with emphasis on the second syllable. The last two syllables "nor" and "a" are pronounced as /fɔːrə/. Overall, the spelling of "tympanophora" is complex and requires careful pronunciation.
In geol., certain fossil plants having minute branching stems, each branchlet being terminated by a rounded or globular appendage resembling a seed-vessel.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.