the GNU version of the Collaborative International Dictionary of English
n. An earth of a white color resembling lime in appearance, and baryta in many of its properties. It is an oxide of the metal strontium.
The Century Dictionary and Cyclopedia
n. The monoxid of strontium, SrO, an alkaline earth which when pure is an infusible grayish-white powder having an acrid burning taste.
Word Usage
"Weigh five ounces of dry nitrate of strontia, one ounce and a half of finely-powdered sulphur, five drams of chlorate of potash, and four drams of sulphuret of antimony."