Dictionary.com
Thesaurus.com

stilliform

American  
[stil-uh-fawrm] / ˈstɪl əˌfɔrm /

adjective

  1. drop-shaped; globular.


stilliform British  
/ ˈstɪlɪˌfɔːm /

adjective

  1. rare  having the shape of a drop or globule

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of stilliform

stilli- (combining form of Latin stilla drop) + -form