Essential Element is a term that can be used to describe the most important components of something. PITH, THREAD, SOUL, Beall, Sinequanon, and Partandparcel are all words that can be used to describe Essential Element. PITH is a noun meaning the soft inner part of a plant stem or trunk. THREAD is a noun meaning a thin strand of cotton, nylon, or other fibres used in sewing or weaving. SOUL is a noun meaning the spiritual or immaterial part of a human being or animal, regarded as immortal. Beall is a noun meaning the whole of something; entirety. Sinequanon is a noun meaning an essential condition or requirement. Partandparcel is a noun meaning an essential element or component of something.