The current record-holder for melting point is tantalum hafnium carbide (Ta4HfC5), a refractory compound with a melting point of 4215 Â°C In other words, you could not heat a rock that high because there's not a furnace or a crucible on earth that could hold it.
DEFINITION of 'Trade Surplus'. An economic measure of a positive balance of trade, where a country's exports exceeds its imports. A trade surplus represents a net inflow of domestic currency from foreign markets, and is the opposite of a trade deficit, which would represent a net outflow. Next Up.
adjective. noun. The definition of surplus is something that is in excess of what you need. 1  An example of surplus goods are items you do not need and have no use for. 2  An example of surplus cash is money left over after you have paid all of your bills.