ver•ti•cil•las•ter(vûr′tə si las′tər),USA pronunciationn.[Bot.]
Botanyan inflorescence in which the flowers are arranged in a seeming whorl, consisting in fact of a pair of opposite axillary, usually sessile, cymes, as in many mints.
Latin verticill(us) verticil + -aster1
1825–35;
ver•ti•cil•las•trate(vûr′tə si las′trāt, -trit),USA pronunciationadj.