Calculating

1. p. pr. & vb. n. of Calculate
2. a. Of or pertaining to mathematical calculations; performing or able to perform mathematical calculations.
3. a. Given to contrivance or forethought; forecasting; scheming; as, a cool calculating disposition.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.