Correct spelling for the English word "Sedimental" is [sˌɛdɪmˈɛntə͡l], [sˌɛdɪmˈɛntəl], [s_ˌɛ_d_ɪ_m_ˈɛ_n_t_əl] (IPA phonetic alphabet).
The word "sedimental" is a portmanteau of the words "sediment" and "sentimental".
"Sentimental" dates back to the mid-18th century and is derived from the Latin word "sentimentum", meaning "feeling" or "emotion". It entered the English language through French.
On the other hand, "sediment" originated from the Latin word "sedimentum", which means "settling" or "sinking down". This Latin term is derived from the verb "sedere", meaning "to sit". The word "sediment" was first used in English in the late 16th century.
Combining these two words, "sedimental" emerged as a blend of the notions of settling or sinking down (associated with sediment) and emotional or nostalgic feelings (associated with sentimental).