Webster's Revised Unabridged Dictionary · 1913

Add

Add ({not transcribed}) , transitive verb

[Latin addere; ad + dare to give, put. Compare Date, Do.]

1.
To give by way of increased possession (to any one); to bestow (on).
The Lord shall add to me another son. — Gen. xxx. 24
2.
To join or unite, as one thing to another, or as several particulars, so as to increase the number, augment the quantity, enlarge the magnitude, or so as to form into one aggregate. Hence: To sum up; to put together mentally; as, to add numbers; to add up a column.
Back to thy punishment, False fugitive, and to thy speed add wings. — Milton
As easily as he can add together the ideas of two days or two years. — Locke
3.
To append, as a statement; to say further.
He added that he would willingly consent to the entire abolition of the tax. — Macaulay

Add ({not transcribed}) , intransitive verb

1.
To make an addition. To add to, to augment; to increase; as, it adds to our anxiety.
I will add to your yoke. — 1 Kings xii. 14
2.
To perform the arithmetical operation of addition; as, he adds rapidly.