denoting a verb when it does not require a direct object
b.
denoting a verb that customarily does not require a direct object
"to faint" is an intransitive verb
c. (as noun)
a verb in either of these categories
2.
denoting an adjective or noun that does not require any particular noun phrase as a referent
3. logic, mathematics
(of a relation) having the property that if it holds between one argument and a second, and between the second and a third, it must fail to hold between the first and the third