quintessence /kwin-tesˈəns or kwinˈte-səns/

1. The pure concentrated essence of anything
2. The most essential part, form or embodiment of anything
3. A dynamical field that is repulsed by gravity and induces a vacuum energy, exerting a negative, outward pressure that is thought to cause the acceleration of the expansion of the universe (astronomy)
4. Orig a fifth entity, in addition to the four elements

quintessential /-ti-senˈshl/ adjective

• symmetrized
• symmetrizes
• symmetrizing
• symmetrophobia
• symmetrophobias
• symmetry
• sympathectomies
• sympathectomy
• sympathetic
• sympathetical
• sympathetically
• sympathetic ink
• sympathetic magic
• sympathetic nervous system
• sympathetic nervous systems
• sympathetic strike
• sympathetic strikes
• sympathetic string
• sympathetic strings
• sympathies
• sympathin
• sympathins
• sympathique
• sympathise
• sympathised