Online Google Dictionary

time consuming wordnet sense
  1. of a task that takes time and patience
  3. Requiring significant amounts of time
  4. Since consensus decision-making focuses on discussion and seeks the input of all participants, it can be a time-consuming process. ...
  5. TIME + (2h)[B^], POs > signer, FOs up, are held at mouth level and zoom past cheeks as if being wolfed down.