Addition is the process of combining two or more numbers, quantities, or items to find their total sum or aggregate.
It's a fundamental arithmetic operation represented by the plus sign (+). Beyond simple arithmetic, Addition can also refer to the act of adding something to something else, be it an object, idea, or element, resulting in an enlargement, accumulation, or enhancement.
It is used to increment something, or calculate what the total becomes after something is added. .
ELL
WING PLUS GAIN
ANNEX ADDON RIDER EXTRA
ANNEXE
APPENDIX INCREASE IMPROVER
SUMMATION ACCESSION INSERTION APPENDAGE INCREMENT
SUPPLEMENT
AFTERTHOUGHT