The phrase "define the requirement" is correct and usable in written English.
You can use it in any context where you are asking someone to be specific in defining a requirement for something. For example, "Could you please define the requirements for the project?".
She questioned whether Osborne's new fiscal mandate would require a surplus in every year and also asked how Osborne planned to define the requirement to be in surplus in normal times.
For genotoxicity, a threshold concept based on ICH M7 and in line with CTFG, was introduced using permissible daily exposure/acceptable daily intake to define the requirement for highly effective contraception related to small molecules.
Ca2+ free conditions were ensured by using 1.2 mM EGTA (Applichem, Darmstadt, Germany) and 10 µM Thapsigargin (Calbiochem, Darmstadt, Germany) to define the requirement of extracellular calcium ions and calcium ions released from the intracellular stores.
An RNA interference (RNAi) approach was used to define the requirement of Grb2 or Shc in Tpr-Met-transformed IEC-6 cells.
Our results define the requirement of the two major contributors to the FAD2 enzyme activity present in developing soybean seeds, FAD2-1A and FAD2-1B.
The software engineer should analyze the system's requirements, aiming to define the requirements that are critical, and therefore require some action in case of failure.
First, based on the literature, I define the requirements (systemic, situated, integrating multiple perspectives, etc).
In order to define the requirements, CTL notation has been preferred in this study.
Alternative H2 production processes were examined to define the requirements such processes would impose on the nuclear reactor.
From our analysis of mailing lists, the release team leads the discussions to define the requirements of a GNOME Release.
Aim of the project was to define the requirements to be applied to traffic technologies to match specific applications.
