surd

It offers private, group and corporate surf lessons, as well as an after-school program, surd camps and rentals, according to its website.

During our conversation he used the words “slippage” and “surd,” the last of which sent me to the dictionary.

Sometimes they grunt or say “Aha” or “Trade you” or “Got you back”; or they exchange new, obscure good-natured insults: “You surd!”

The art of calculating with any species of notation; as, the algorithms of fractions, proportions, surds, etc.

Review the method of finding the square root of a binomial surd.