Toothpaste is a dentifrice.
dentifrice definition by Webster's New World
Origin: Middle English dentifricie ; from Classical Latin dentifricium, tooth powder ; from dens, tooth plush fricare, to rub: see friable
dentifrice definition by American Heritage Dictionary
Origin: French, from Old French, from Latin dentifricium : denti-, denti- + fricāre, to rub.
dentifrice - Medical Definition