The reactor itself became a globally dominant supplier of radioisotopes — in particular, molybdenum - 99 (Mo - 99), a workhorse of medical imaging employed for millions of scans every year. (sciencemag.org)
Many schools still select training and consultancy from a single dominant supplier (often the local authority) or from a folder of assorted fliers that have arrived in the post. (theguardian.com)
That's because Canada's role as a dominant supplier of manufactured goods to the U.S. faces a serious challenge from Mexico. (canadianbusiness.com)