Fulness; completion; whence. They as they feasted had their fill, For a full complement of all their ill.

Full quantity or number; the quantity or number limited; as, a company has its complement of men; a ship has its complement of stores.

That which is added, not as necessary, but as ornamental: something adventitious to the main thing; ceremony. [See Compliment. Garnished and decked in modest complement.

In geometry, what remains of the quadrant of a circle, or of ninety degrees, after any arch has been taken from it. Thus if the arch taken is thirty degrees, its complement is sixty.

In astronomy, the distance of a star from the zenith.

Arithmetical complement of a logarithm, is what the logarithm wants of 10,000,000.

In fortification, the complement of the curtain is that part in the interior side which makes the demigorge.