noun

• (anatomy) The way in which an organ, bone, muscle etc. becomes inserted into its set place.
• Planting; securing a plant etc. into the ground.
• The introduction of a notion, idea or thought into someone's mind.
• (surgery) The act of inserting a medical implant.
• (embryology) The attachment of the fertilized ovum to the uterus wall.
• (physics) The insertion of ions into the crystal structure of another material through ion bombardment.