Undulate

• (v. i.) To move in, or have, undulations or waves; to vibrate; to wave; as, undulating air. • (a.) Same as Undulated. • (v. t.) To cause to move backward and forward, or up and down, in undulations or waves; to cause to vibrate.
Found on http://thinkexist.com/dictionary/meaning/undulate/

undulate

adjective having a wavy margin and rippled surface
Found on https://www.encyclo.co.uk/local/20974

Undulate

having wavy sides
Found on http://orchidfetish.com/glossary.html

Undulate

having wavy sides
Found on http://www.orchidspecies.com/glossary.htm

undulate

move in a wavy pattern or with a rising and falling motion
Found on https://www.vocabulary.com/lists/158781

undulate

to move in wavelike fashion fluctuate 
Found on http://www.graduateshotline.com/list.html

undulate

Type: Term Pronunciation: ŭn′dū-lāt Definitions: 1. Having an irregular, wavy border; denoting the shape of a bacterial colony.
Found on http://www.medilexicon.com/medicaldictionary.php?t=95595

Undulate

Undulate: To have a wavy border or form. Also, to rise and fall like a wave. For example, the border of a wound may undulate, as may the edge of a rash. And sound waves may undulate. The word 'undulate' comes from the Latin 'undula' which is the diminutive of 'unda' meaning wave. So 'undula' is a little wave. The adjective is 'undulant.' Undulant f...
Found on http://www.medterms.com/script/main/art.asp?articlekey=15643

undulate

Verb: To move in a wavelike motion. ... Adj., Wavy. ... (09 Oct 1997) ...
Found on http://www.encyclo.co.uk/local/20973

Undulate

wavy
Found on http://www.calflora.net/botanicalnames/botanicalterms.html

Undulate

wavy
Found on http://www.encyclo.co.uk/local/21767

undulate

wavy and not flat; compare sinuate.
Found on http://en.wikipedia.org/wiki/Glossary_of_botanical_terms

Undulate

Wavy in an up and down fashion, vertically to the surface.
Found on http://www.encyclo.co.uk/local/22034

undulate

Wavy.
Found on http://www.anbg.gov.au/cpbr/cd-keys/orchidkey/html/glossary.html

undulate

with an edge or edges wavy in a vertical plane; may vary from weakly to strongly undulate or crisped. cf. crisped
Found on http://florabase.dpaw.wa.gov.au/help/glossary

undulate

[adj] - having a sinuate margin and rippled surface 2. [v] - move in a wavy pattern, as of curtains 3. [v] - increase and decrease in volume or pitch, as if in waves
Found on http://www.webdictionary.co.uk/definition.php?query=undulate