Charak Samhita
रजः प्रदीर्यते यस्मात् प्रदरस्तेन स स्मृतः । सामान्यतः समुद्दिष्टं कारणं लिङ्गमेव च ॥२०९॥
and because of excessive flow of menstrual blood it is called Pradara (menorrhagia). The general causes and symptoms of Pradara are directed here.
english translation
rajaH pradIryate yasmAt pradarastena sa smRtaH । sAmAnyataH samuddiSTaM kAraNaM liGgameva ca ॥209॥
hk transliteration by Sanscript