English
boron
From the stem of borax (boro-) + -on (based on carbon).
The story
Coined by British chemist Humphry Davy as a modification of his earlier word boracium.
Today it means
noun The chemical element (symbol B) with an atomic number of 5, which is a metalloid found in its pure form as a dark amorphous powder.
Language periods are conventional ranges, not dates for this word.
Etymograph / boron