Zuwachs

noun
  1. An increase or growth in size, number, or amount of something; a gain or addition. noun
    The Zuwachs in the company's profits was impressive this quarter.
    There was a significant Zuwachs in the population of the city over the past decade.
  2. A new member or addition to a group, family, or collection. noun
    The family celebrated the arrival of their Zuwachs, a newborn baby.
    The club welcomed a Zuwachs of several new members this year.