Synthetical

1. a. Comprising within itself structural or other characters which are usually found only in two or more diverse groups; — said of species, genera, and higher groups. See the Note under Comprehensive, 3.
2. a. Of or pertaining to synthesis; consisting in synthesis or composition; as, the synthetic method of reasoning, as opposed to analytical.
3. a. Artificial. Cf. Synthesis, 2.

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.