1. Marked by continuous change or effective action
   - changing

See also: dynamic, dynamical

• zeroth law of thermodynamics
• zest
• zester
• zestful
• zestfully
• zestfulness
• zestily
• Zestril
• zesty
• zeta
• Zetland
• zettabit
• zettabyte
• zeugma
• Zeus
• Zeus faber
• Zhou
• Zhou dynasty
• Zhou En-lai
• Zhu Jiang
• Zhuang
• Zhukov
• ZiB
• Zibit
• zidovudine