D defs.my
Entry 4 senses Webster, 1913

Insertion

/ĭnˌ-sẽrsh'-ən/ · In·ser·tion · IPA /ɪnˈsɝʃən/
01 n. The act of inserting; as, the insertion of scions in stocks; the insertion of words or passages in writings.
  1. 1.
    The act of inserting; as, the insertion of scions in stocks; the insertion of words or passages in writings.
  2. 2.
    The condition or mode of being inserted or attached; as, the insertion of stamens in a calyx.
  3. 3.
    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; as, there were numerous insertions and corrections to the first draft.
  4. 4.
    The point or part by which a muscle or tendon is attached to the part to be moved; -- in contradistinction to its origin.(Anat.)
Phrases & compounds
Epigynous insertion — the insertion of stamens upon the ovary.
Hypogynous insertion — insertion beneath the ovary.