Thimerosal was dropped as a preservative in MMR vaccines in 1999, but since then autism rates have skyrocketed.
preservative and healing agencies against disease — well-regulated exercise, of mind and body proportionally.
As an example of the action of lime as a preservative of lumber.
It was used not only for seasoning, but also as a preservative agent.
Men, as well as masters, lay the "preservative" on as thickly as they can.
Thus protected, they could dispense with the preservative mixture of the former year.
Gravity is but the rind of wisdom; but it is a preservative rind.
Usually the 1st row of dorsal scales is dark brown; in some specimens the brown on the 1st or 7th row has faded in preservative.
The latter is a carrier of potash, and is a preservative of nitrogen.
We thus have the two essential forces of life—the preservative force and the reproductive force, arising alike from nutrition.
late 14c., from Old French preservatif and directly from Medieval Latin praeservativus, from stem of praeservare (see preserve (v.)). The noun is from early 15c., "a preservative medication;" sense of "chemical added to foods to keep them from rotting" is from 1875.
preservative pre·ser·va·tive (prĭ-zûr'və-tĭv)
A substance added to food products or to organic solutions to prevent decomposition due to chemical change or bacterial action.