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arithmetical complement of a number Explained

Arithmetical complement of a number at English => English (Websters 1913) Of Explained:

Complement \Com"ple*ment\, n. [L. complementun: cf. F.
compl['e]ment. See {Complete}, v. t., and cf. {Compliment}.]
1. That which fills up or completes; the quantity or number
required to fill a thing or make it complete.

2. That which is required to supply a deficiency, or to
complete a symmetrical whole.

History is the complement of poetry. --Sir J.
Stephen.

3. Full quantity, number, or amount; a complete set;
completeness.

To exceed his complement and number appointed him
which was one hundred and twenty persons. --Hakluyt.

4. (Math.) A second quantity added to a given quantity to
make it equal to a third given quantity.

5. Something added for ornamentation; an accessory. [Obs.]

Without vain art or curious complements. --Spenser.

6. (Naut.) The whole working force of a vessel.

7. (Mus.) The interval wanting to complete the octave; -- the
fourth is the complement of the fifth, the sixth of the
third.

8. A compliment. [Obs.] --Shak.

{Arithmetical compliment of a logarithm}. See under
{Logarithm}.

{Arithmetical complement of a number} (Math.), the difference
between that number and the next higher power of 10; as, 4
is the complement of 6, and 16 of 84.

{Complement of an} {arc or angle} (Geom.), the difference
between that arc or angle and 90[deg].

{Complement of a parallelogram}. (Math.) See {Gnomon}.

{In her complement} (Her.), said of the moon when represented
as full.