What is the test for using a dictionary to determine the meaning of a word?

¹³ "Courts frequently consult dictionaries to determine the usual meaning of words." (In re Marriage of Bonds(2000) 24 Cal.4th 1, 16, 99 Cal.Rptr.2d 252, 5 P.3d 815.) "When attempting to ascertain the ordinary, usual meaning of a word, courts appropriately refer to the dictionary definition of that word." (Wasatch Property Management v. Degrate(2005) 35 Cal.4th 1111, 1121-1122, 29 Cal.Rptr.3d 262, 112 P.3d 647.)