noun the condition or mode of being inserted or attached; as, the insertion of stamens in a calyx.
2. insertion ·noun that which is set in or inserted, especially a narrow strip of embroidered lace, muslin, or cambric.
3. insertion ·noun the act of inserting; as, the insertion of scions in stocks; the insertion of words or passages in writings.
4. insertion ·noun the point or part by which a muscle or tendon is attached to the part to be moved;
in contradistinction to its origin.