(mathematics) Addendum, any one of two or more numbers or other terms that are to be added together. / (organic chemistry) A moiety added to another molecule.

To furnish with an addendum. / (organic chemistry) To furnish with an addend.

plural of addendum

(archaic) A dragonfly.

By way of addition; in addition to; also.

The first man and woman, respectively, according to the Book of Genesis.

The puttyroot (Aplectrum hyemale).

(Cockney rhyming slang) To believe.

Causing or tending to cause addiction; habit-forming. / Enjoyable. / Characterized by or susceptible to addiction.

A drug that causes an addiction. / Anything that is very habit-forming.