Adjective
1. furthest or highest in degree or order; utmost or extreme;
"the ultimate achievement""the ultimate question""man's ultimate destiny""the ultimate insult""one's ultimate goal in life"2. being the last or concluding element of a series;
"the ultimate sonata of that opus""a distinction between the verb and noun senses of `conflict' is that in the verb the stress is on the ultimate (or last) syllable"3. being the ultimate or elemental constituents of anything;
"the elemental stuff of...out of which the many forms of life have been molded"- Jack London"the ultimate ingredients of matter""his proposal is elegantly simple"