Part 86

Ad*dit"a*ment (d*dt"*ment), n. [L. additamentum, fr. additus, p. p. of addere to add.] An addition, or a thing added. Fuller.

My persuasion that the latter verses of the chapter were an additament of a later age. Coleridge.

Ad*di"tion (&?;), n. [F. addition, L. additio, fr. addere to add.] 1. The act of adding two or more things together; -- opposed to subtraction or diminution. "This endless addition or addibility of numbers." Locke.

2. Anything added; increase; augmentation; as, a piazza is an addition to a building.

3. (Math.) That part of arithmetic which treats of adding numbers.

4. (Mus.) A dot at the right side of a note as an indication that its sound is to be lengthened one half. [R.]

5. (Law) A title annexed to a man's name, to identify him more precisely; as, John Doe, Esq.; Richard Roe, Gent.; Robert Dale, Mason; Thomas Way, of New York; a mark of distinction; a title.

6. (Her.) Something added to a coat of arms, as a mark of honor; -- opposed to abatement.

Vector addition (Geom.), that kind of addition of two lines, or vectors, AB and BC, by which their sum is regarded as the line, or vector, AC.

Syn. -- Increase; accession; augmentation; appendage; adjunct.

Ad*di"tion*al (&?;), a. Added; supplemental; in the way of an addition.

Ad*di"tion*al, n. Something added. [R.] Bacon.

Ad*di"tion*al*ly, adv. By way of addition.

Ad*di"tion*a*ry (&?;), a. Additional. [R.] Herbert.

Ad`di*ti"tious (&?;), a. [L. addititius, fr. addere.] Additive. [R.] Sir J. Herschel.

Ad"di*tive (&?;), a. [L. additivus.] (Math.) Proper to be added; positive; -- opposed to subtractive.

Ad"di*to*ry (&?;), a. Tending to add; making some addition. [R.] Arbuthnot.

Ad"dle (&?;), n. [OE. adel, AS. adela, mud.] 1. Liquid filth; mire. [Obs.]

2. Lees; dregs. [Prov. Eng.] Wright.

Ad"dle, a. Having lost the power of development, and become rotten, as eggs; putrid. Hence: Unfruitful or confused, as brains; muddled. Dryden.

Ad"dle, v. t. & i. [imp. & p. p. Addled (&?;); p. pr. & vb. n. Addling (&?;).] To make addle; to grow addle; to muddle; as, he addled his brain. "Their eggs were addled." Cowper.

Ad"dle, v. t. & i. [OE. adlen, adilen, to gain, acquire; prob. fr. Icel. öðlask to acquire property, akin to oðal property. Cf. Allodial.] 1. To earn by labor. [Prov. Eng.] Forby.

2. To thrive or grow; to ripen. [Prov. Eng.]

Kill ivy, else tree will addle no more. Tusser.

{ Ad"dle-brain` (&?;), Ad"dle-head` (&?;), Ad"dle- pate (&?;), } n. A foolish or dull-witted fellow. [Colloq.]

{ Ad"dle-brained` (&?;), Ad"dle-head`ed (&?;), Ad"dle-pa`ted (&?;), } a. Dull-witted; stupid. "The addle-brained Oberstein." Motley.

Dull and addle-pated. Dryden.

Ad"dle-pa`ted*ness (&?;), n. Stupidity.