"largely constitutes" is grammatically correct and can be used in written English.
It is used to describe something that makes up a significant portion or majority of something else. Example: The youth demographic largely constitutes the target audience for this new product.
Here is a panel which will remain largely constituted of voters with a natural bias (and financial incentive) to award their own individual work.
They soon settled in the town of Quincy, where they joined a Catholic church whose congregation was largely constituted by German immigrants.
Novelist Ajaz Ashraf wrote on India's Scroll website: "Underlying it is the hope of bringing into the BJP tent the modern-day gurus and their teeming followers, who largely constitute the urban middle classes".
How often have I heard that cry go up while watching the climactic duel between Hamlet and Laertes, which up to now has largely constituted all I know about fencing.
It is largely constituted by clay minerals (montmorillonite-kaolinite) which only in drastic treatments, including HF-HCl, are able to dissolve.
At pH 1 and pH 3, the inorganic phase bound to the insoluble humic material was largely constituted by clay minerals and some Al and Fe hydroxides.
As most local illicit heroin samples are largely constituted by caffeine (about 80%), a caffeine solution (approximately 12 mg/mL) was employed as a blank matrix to prepare four dilutions at low levels (0.001 0.008 mg/mL) to study LOD under the caffeine effect.
The Mohists, like the Confucians, see individuals as largely constituted by the hierarchical, relational social roles they occupy, such as ruler or subject, father or son, elder or younger brother, male or female, elder or youth, or member of a family or community.
Collectively, Alotta McGriddles and Thorgy Thor compile around fifty items for every monthly auction, largely constituted of outerwear for drag performers but also a handful of unisex and men's items.
