From radio- + strontium. <span class="searchmatch">radiostrontium</span> (countable and uncountable, plural <span class="searchmatch">radiostrontiums</span>) any radioactive isotope of strontium, especially 9038Sr strontium-90...
<span class="searchmatch">radiostrontiums</span> plural of <span class="searchmatch">radiostrontium</span>...
of <span class="searchmatch">Radiostrontium</span> (Sr89) and Radioruthenium (Ru103) in Certain Vegetable Crops, page 22: The absorption of radioruthenium (Ru103) and <span class="searchmatch">radiostrontium</span> (Sr*)...