ALL meanings of underlain
un·der·lie
U u - verb with object underlain to lie under or beneath; be situated under. 1
- verb with object underlain to be at the basis of; form the foundation of. 1
- verb with object underlain Grammar. to function as the root morpheme or original or basic form of (a derived form): The form “boy” underlies “boyish.”. 1
- verb with object underlain Finance. to be primary to another right or security. 1