insertion

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The act or process of inserting.
2. n. Something inserted, as an ornamental strip of lace or embroidery inserted between pieces of fabric.
3. n. Anatomy The point or mode of attachment of a skeletal muscle to the bone or other body part that it moves.
4. n. Genetics The addition, as by mutation, of one or more nucleotides to a chromosome.

Century Dictionary and Cyclopedia

1. n. A putting in; the act of inserting, or placing, or setting something in or among other things: as, the insertion of a beam in a wall.
2. n. That which is inserted. Speciflcally— A passage or paragraph inserted in the text of a writing.
3. n. A band of lace or other ornamental material inserted in a plain fabric for decorative purposes. Such bands are often made with both edges alike, and with a certain amount of plain stuff on either side, to allow them to be sewed on strongly.
4. n. Place or manner of attachment. In botany, the place or the mode of attachment of an organ to its support.

Wiktionary

1. n. The act of inserting, or something inserted.
2. n. anatomy The distal end of attachment of a muscle to a bone that will be moved by the muscle.
3. n. genetics The addition of a nucleotide to a chromosome by mutation

GNU Webster's 1913

1. n. The act of inserting
2. n. The condition or mode of being inserted or attached.
3. n. That which is set in or inserted, such as a word or passage in a composition, or a narrow strip of embroidered lace, muslin, or cambric.
4. n. (Anat.) The point or part by which a muscle or tendon is attached to the part to be moved; -- in contradistinction to its origin.

WordNet 3.0

1. n. a message (spoken or written) that is introduced or inserted
2. n. the act of putting one thing into another