The Collaborative International Dictionary
Santalaceous
Santalaceous \San`ta*la"ceous\, a. (Bot.) Of or pertaining to a natural order of plants ( Santalace[ae]), of which the genus Santalum is the type, and which includes the buffalo nut and a few other North American plants, and many peculiar plants of the southern hemisphere.
Wiktionary
santalaceous
a. (context botany English) Relating to the flowering plant family Santalaceae.