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bottom-up (EN)
adjective

adjective “bottom-up”

base form bottom-up, non-gradable
  1. (of an approach or process) starting at the lowest level or simplest parts and moving up to higher levels or more complex parts
    The engineers developed the new software using a bottom-up approach, beginning with basic functions before integrating them.
  2. (of a system or organization) influenced or controlled by the people at the lowest level, rather than from the top
    The company encourages bottom-up decision-making, allowing employees to propose new ideas.