"root origins" is a correct and usable phrase in written English.
You can use it to refer to the earliest sources of a particular thing. For example: "The root origins of this custom can be traced back hundreds of years."
Fig. 5 Small lateral root origin.
The probabilistic behaviors of power system failures are the root origin of risks [1], and an effective risk assessment model can provide quantitative risk indices to represent system reliability.
In all cases, adequate decompression of the cervical spinal cord and the nerve root origin was obtained.
Ventral to the posterior zygomatic root merging with the braincase is the large, external auditory meatus, which has a large, rounded, laterally facing opening ventral to the posterior zygomatic root origin.
As carnival has outgrown its grass-roots origins, it has brought with it a constant process of negotiation and occasional flash points; there have been inevitable conflicts, over both its economic orientation and its political function.
Serena Botelho, 21, a friend of Mr. Martin's with delicate eyes, short green hair and striped stockings, said she was concerned about how Juggalos were becoming increasingly associated with acts of violence and vandalism, and disappointed that Insane Clown Posse was abandoning its grass-roots origins to play alongside Lil Wayne and Mötley Crüe at the "very mainstream" Bamboozle festival.
Unsurprisingly following the rise and rise of ISIS there is a glut of writing looking to better understand and explain the roots, origins and ascent of what is widely accepted to be the richest and most dangerous 'terrorist' group of the modern age.
Use a dictionary to study word roots, origins, languages, etc. Make sure your child is comfortable on stage.
The word "radical" is derived from the Latin word radicalis, meaning "going to the roots, origin, essential" (lat. Radix = root).
