in_stages
1. [ adverb ] a little bit at a time
Synonyms: little_by_little bit_by_bit piecemeal
Examples:

"the research structure has developed piecemeal"

Similar spelling:   insatiate
  insatiable
  instance
  in_style
  in_store
  in_stride
  instar
  instal
  inmost
  insatiably
  instant
  install
  inside
  in-situ
  in_situ