Least a. [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. --1 Cor. xv. 9.
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. --Milton.
Upon the mast they saw a young man, at least if he were a man, who sat as on horseback. --Sir P. Sidney.
-- In least, or In the least, in the least degree, manner, etc. “He that is unjust in the least is unjust also in much.” --Luke xvi. 10.
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.
at the least
adv : not less than; "at least two hours studying the manual"; "a
tumor at least as big as an orange" [syn: at least]
[ant: at most, at most]