Curvilinear

• (a.) Consisting of, or bounded by, curved lines; as, a curvilinear figure.
Found on http://thinkexist.com/dictionary/meaning/curvilinear/

Curvilinear

A free-flowing trail layout pattern characterized by the general absence of straight trail segments allowing for ease of trail user movement.
Found on http://www.americantrails.org/

curvilinear

Formed or characterized by curving lines or edges.
Found on http://www.encyclo.co.uk/local/21532

Curvilinear

Something created by using curved edges.
Found on http://www.translationdirectory.com/glossaries/glossary346.php

curvilinear

Stressing the use of curved lines as opposed to rectilinear which stresses straight lines.
Found on http://www.modernsculpture.com/glossary.htm
No exact match found