"computing" in the noun sense
1. computer science, computing
the branch of engineering science that studies (with the aid of computers) computable processes and structures
2. calculation, computation, computing
the procedure of calculating determining something by mathematical or logical methods
"computing" in the verb sense
1. calculate, cipher, cypher, compute, work out, reckon, figure
make a mathematical calculation or computation
Source: WordNet® (An amazing lexical database of English)
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