[ gwahy-uh-kuh m ]
/ ˈgwaɪ ə kəm /


any of several tropical American trees or shrubs belonging to the genus Guaiacum of the caltrop family; lignum vitae.
the hard, heavy wood of such a tree; guaiac.
resin obtained from such a tree; guaiac.

Origin of guaiacum

1525–35; < New Latin < Spanish guayaco, guayacán < Taino Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for guaiacum

British Dictionary definitions for guaiacum



/ (ˈɡwaɪəkəm) /


any tropical American evergreen tree of the zygophyllaceous genus Guaiacum, such as the lignum vitae
the hard heavy wood of any of these trees
Also called: guaiac (ˈɡwaɪæk) a brownish resin obtained from the lignum vitae, used medicinally and in making varnishes

Word Origin for guaiacum

C16: New Latin, from Spanish guayaco, of Taino origin
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