The phrase "a time consuming process that" is correct and usable in written English.
You can use it when describing a process that requires a significant amount of time to complete.
Example: "The project involves a time consuming process that requires careful planning and execution."
Alternatives: "a lengthy process that" or "an arduous process that".
Election inspectors, reluctant to tell these voters they were barred, gave them provisional ballots -- a time consuming process that made the waiting time to vote even longer.
Amid concerns over traffic congestion and other environmental issues, the city and voters over the years slashed the number of homes that could be built without special approvals — a time consuming process that involves public hearings and offers a prime target for lawsuits.
Secondly, giving an antibiotic intravenously is a time consuming process that requires special equipment.
Reform of statistics cycle is a time consuming process that requires continuous commitment of multiple stakeholders and a strong political will.
In comparison with the short classification runtimes, the creation of an oligopeptide database is a more time consuming process that took 6.5 h for the Pfam 24 database.
However, some negative aspects remained, since some of the challenges associated with the UMeP caused students to feel that using it was a time consuming process and that feedback on SLEs did not help their learning.
Making a choice to go out and change yourself is not only a time consuming process, but one that requires a strong want to truly change.
It insisted that women obtain a prescription, a time-consuming process that could often render the pills useless.
But Christchurch's coroner said it was a time-consuming process that included identifying clothing and obtaining medical records and fingerprints.
The senior government official, who was deeply involved in the development of the plan, argued tonight that the "new source reviews" by the Environmental Protection Agency are a "time-consuming process" that often "discourage fuel efficiency".
Until now, the 120 or so members of the exchange had to reach a consensus to change policy, a time-consuming process that was heavily influenced by the largest brokers.
