Relating to or involving addition; characterized by adding things together rather than other mathematical operations.
From Latin 'additio' (adding) combined with the English suffix '-ary' (relating to). The term emerged in mathematical and logical contexts to describe processes or properties that specifically involve addition.
This word is rare in everyday speech but shows up in mathematics and philosophy when scholars want to distinguish addition-based thinking from multiplication or other operations—it's how specialists mark 'addition-focused' thinking.
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