New Latin, from Greek origanon wild marjoram
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
Examples from the Web for origanum
It is extracted from Origanum oil by means of a 10% potash solution.
Marjoram oil, distilled from Origanum majoranoides, and obtained entirely from Cyprus.The Handbook of Soap Manufacture
W. H. Simmons
Dr Cattell scents it with the oils of origanum and bergamot instead of cinnamon.Cooley's Practical Receipts, Volume II
Page 233: "majoram" changed to "marjoram" (Origanum majorana (or common marjoram)).
The caterpillar feeds on thyme (Thymus Serpyllum) and marjoram (Origanum vulgare).Butterflies and Moths
William S. Furneaux