Augmentation

Noun

1. The act or process of augmenting.
2. An addition or extra, something that is added to something else.
3. A particular mark of honour, granted by the sovereign in consideration of some noble action, or by favour; and either quartered with the family arms, or on an escutcheon or canton.
4. A surgical procedure to enlarge a body part, as breast augmentation.
5. The stage of a disease during which symptoms increase or continue.