LEAST SQUARES • FREE TRANSLATOR.ORG • Definition of Least squares

Least adj. (Used as the superlative of little.) Smallest, either in size or degree; shortest; lowest; most unimportant; as, the least insect; the least mercy; the least space. Note: Least is often used with the, as if a noun. "I am the least of the apostles."

At least, or At the least, at the least estimate, consideration, chance, etc.; being no less than; hence, at any rate; at all events; even. See However. "He who tempts, though in vain, at least asperses The tempted with dishonor." "Upon the mast they saw a young man, at least if he were a man, who sat as on horseback." In least, or In the least, in the least degree, manner, etc. "He that is unjust in the least is unjust also in much." Least squares (Math.), a method of deducing from a number of carefully made yet slightly discordant observations of a phenomenon the most probable values of the unknown quantities. Note: It takes as its fundamental principle that the most probable values are those which make the sum of the squares of the residual errors of the observation a minimum.