transitive verb.
To reduce in complexity or extent.
transitive verb.
To reduce to fundamental parts.
transitive verb.
To make easier to understand.
The Century Dictionary and Cyclopedia
To make simple; reduce from complexity to simplicity; also, to make easy of use, execution, performance, or comprehension.
To produce or effect simplicity.
the GNU version of the Collaborative International Dictionary of English
transitive verb.
To make simple; to make less complex; to make clear by giving the explanation for; to show an easier or shorter process for doing or making.