relating to the relation between any two propositions, both of which may be true, but only one of which can be false.
Conditions
When you submit material to Macquarie Dictionary the following conditions apply:
This database is run and maintained by Macquarie Dictionary Publishers an imprint of Pan Macmillan Australia Pty Ltd, publishers of the Macquarie Dictionary.
The Macquarie Dictionary Publishers an imprint of Pan Macmillan Australia Pty Ltd maintains the right to publish in book or electronic form products arising from this website.